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Finding the Fourth Proportional to 837,527.40, 1,256,291.10 and 518,662.80

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Solution

The fourth proportional to 837,527.40, 1,256,291.10 and 518,662.80 is: 777,994.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,527.40 : 1,256,291.10 = 518,662.80 : x
  2. Step 2: Convert to fraction form
    837,527.40/1,256,291.10 = 518,662.80/x
  3. Step 3: Cross multiply
    837,527.40x = 1,256,291.10 × 518,662.80
  4. Step 4: Simplify right side
    837,527.40x = 651,591,459,541.08
  5. Step 5: Solve for x
    x = 651,591,459,541.08/837,527.40
  6. Step 6: Final answer
    x = 777,994.20

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Double scale
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Similar ratio
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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.