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Finding the Fourth Proportional to 661,227.86, 912,594.20 and 403,254.47

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Solution

The fourth proportional to 661,227.86, 912,594.20 and 403,254.47 is: 556,552.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,227.86 : 912,594.20 = 403,254.47 : x
  2. Step 2: Convert to fraction form
    661,227.86/912,594.20 = 403,254.47/x
  3. Step 3: Cross multiply
    661,227.86x = 912,594.20 × 403,254.47
  4. Step 4: Simplify right side
    661,227.86x = 368,007,690,446.07
  5. Step 5: Solve for x
    x = 368,007,690,446.07/661,227.86
  6. Step 6: Final answer
    x = 556,552.00

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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.