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Finding the Fourth Proportional to 59,898.81, 82,686.92 and 38,688.42

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Solution

The fourth proportional to 59,898.81, 82,686.92 and 38,688.42 is: 53,407.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,898.81 : 82,686.92 = 38,688.42 : x
  2. Step 2: Convert to fraction form
    59,898.81/82,686.92 = 38,688.42/x
  3. Step 3: Cross multiply
    59,898.81x = 82,686.92 × 38,688.42
  4. Step 4: Simplify right side
    59,898.81x = 3,199,026,076.11
  5. Step 5: Solve for x
    x = 3,199,026,076.11/59,898.81
  6. Step 6: Final answer
    x = 53,407.18

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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.