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Finding the Fourth Proportional to 476,663.59, 657,801.17 and 261,808.66

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Solution

The fourth proportional to 476,663.59, 657,801.17 and 261,808.66 is: 361,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,663.59 : 657,801.17 = 261,808.66 : x
  2. Step 2: Convert to fraction form
    476,663.59/657,801.17 = 261,808.66/x
  3. Step 3: Cross multiply
    476,663.59x = 657,801.17 × 261,808.66
  4. Step 4: Simplify right side
    476,663.59x = 172,218,042,864.13
  5. Step 5: Solve for x
    x = 172,218,042,864.13/476,663.59
  6. Step 6: Final answer
    x = 361,298.93

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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.