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Finding the Fourth Proportional to 113,712.30, 170,708.85 and 71,592.30

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Solution

The fourth proportional to 113,712.30, 170,708.85 and 71,592.30 is: 107,476.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,712.30 : 170,708.85 = 71,592.30 : x
  2. Step 2: Convert to fraction form
    113,712.30/170,708.85 = 71,592.30/x
  3. Step 3: Cross multiply
    113,712.30x = 170,708.85 × 71,592.30
  4. Step 4: Simplify right side
    113,712.30x = 12,221,439,201.86
  5. Step 5: Solve for x
    x = 12,221,439,201.86/113,712.30
  6. Step 6: Final answer
    x = 107,476.84

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1.5x scale

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.