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Finding the Fourth Proportional to 555,528.13, 766,691.21 and 313,826.36

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Solution

The fourth proportional to 555,528.13, 766,691.21 and 313,826.36 is: 433,115.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,528.13 : 766,691.21 = 313,826.36 : x
  2. Step 2: Convert to fraction form
    555,528.13/766,691.21 = 313,826.36/x
  3. Step 3: Cross multiply
    555,528.13x = 766,691.21 × 313,826.36
  4. Step 4: Simplify right side
    555,528.13x = 240,607,906,275.71
  5. Step 5: Solve for x
    x = 240,607,906,275.71/555,528.13
  6. Step 6: Final answer
    x = 433,115.61

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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.