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Finding the Fourth Proportional to 113,866.64, 170,685.65 and 38,935.54

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Solution

The fourth proportional to 113,866.64, 170,685.65 and 38,935.54 is: 58,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,866.64 : 170,685.65 = 38,935.54 : x
  2. Step 2: Convert to fraction form
    113,866.64/170,685.65 = 38,935.54/x
  3. Step 3: Cross multiply
    113,866.64x = 170,685.65 × 38,935.54
  4. Step 4: Simplify right side
    113,866.64x = 6,645,737,953.00
  5. Step 5: Solve for x
    x = 6,645,737,953.00/113,866.64
  6. Step 6: Final answer
    x = 58,364.22

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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.