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Finding the Fourth Proportional to 661,825.60, 992,738.40 and 512,526.40

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Solution

The fourth proportional to 661,825.60, 992,738.40 and 512,526.40 is: 768,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,825.60 : 992,738.40 = 512,526.40 : x
  2. Step 2: Convert to fraction form
    661,825.60/992,738.40 = 512,526.40/x
  3. Step 3: Cross multiply
    661,825.60x = 992,738.40 × 512,526.40
  4. Step 4: Simplify right side
    661,825.60x = 508,804,638,293.76
  5. Step 5: Solve for x
    x = 508,804,638,293.76/661,825.60
  6. Step 6: Final answer
    x = 768,789.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.