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Finding the Fourth Proportional to 113,425.80, 170,024.28 and 71,335.92

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Solution

The fourth proportional to 113,425.80, 170,024.28 and 71,335.92 is: 106,931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,425.80 : 170,024.28 = 71,335.92 : x
  2. Step 2: Convert to fraction form
    113,425.80/170,024.28 = 71,335.92/x
  3. Step 3: Cross multiply
    113,425.80x = 170,024.28 × 71,335.92
  4. Step 4: Simplify right side
    113,425.80x = 12,128,838,436.14
  5. Step 5: Solve for x
    x = 12,128,838,436.14/113,425.80
  6. Step 6: Final answer
    x = 106,931.92

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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.