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Finding the Fourth Proportional to 113,866.91, 170,686.04 and 38,935.81

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Solution

The fourth proportional to 113,866.91, 170,686.04 and 38,935.81 is: 58,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,866.91 : 170,686.04 = 38,935.81 : x
  2. Step 2: Convert to fraction form
    113,866.91/170,686.04 = 38,935.81/x
  3. Step 3: Cross multiply
    113,866.91x = 170,686.04 × 38,935.81
  4. Step 4: Simplify right side
    113,866.91x = 6,645,798,893.72
  5. Step 5: Solve for x
    x = 6,645,798,893.72/113,866.91
  6. Step 6: Final answer
    x = 58,364.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.