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Finding the Fourth Proportional to 229,488.96, 316,686.60 and 127,513.20

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Solution

The fourth proportional to 229,488.96, 316,686.60 and 127,513.20 is: 175,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,488.96 : 316,686.60 = 127,513.20 : x
  2. Step 2: Convert to fraction form
    229,488.96/316,686.60 = 127,513.20/x
  3. Step 3: Cross multiply
    229,488.96x = 316,686.60 × 127,513.20
  4. Step 4: Simplify right side
    229,488.96x = 40,381,721,763.12
  5. Step 5: Solve for x
    x = 40,381,721,763.12/229,488.96
  6. Step 6: Final answer
    x = 175,963.68

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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.