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Finding the Fourth Proportional to 518,531.40, 777,797.10 and 435,587.40

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Solution

The fourth proportional to 518,531.40, 777,797.10 and 435,587.40 is: 653,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,531.40 : 777,797.10 = 435,587.40 : x
  2. Step 2: Convert to fraction form
    518,531.40/777,797.10 = 435,587.40/x
  3. Step 3: Cross multiply
    518,531.40x = 777,797.10 × 435,587.40
  4. Step 4: Simplify right side
    518,531.40x = 338,798,616,516.54
  5. Step 5: Solve for x
    x = 338,798,616,516.54/518,531.40
  6. Step 6: Final answer
    x = 653,381.10

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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.