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Finding the Fourth Proportional to 884,638,917.28, 1,221,044,500.60 and 513,480,522.88

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Solution

The fourth proportional to 884,638,917.28, 1,221,044,500.60 and 513,480,522.88 is: 708,744,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,638,917.28 : 1,221,044,500.60 = 513,480,522.88 : x
  2. Step 2: Convert to fraction form
    884,638,917.28/1,221,044,500.60 = 513,480,522.88/x
  3. Step 3: Cross multiply
    884,638,917.28x = 1,221,044,500.60 × 513,480,522.88
  4. Step 4: Simplify right side
    884,638,917.28x = 626,982,568,627,836,416
  5. Step 5: Solve for x
    x = 626,982,568,627,836,416/884,638,917.28
  6. Step 6: Final answer
    x = 708,744,049.56

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Double scale
Find fourth proportional to 884,638,918.28, 1,221,044,501.98 and 513,480,523.88
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.