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Finding the Fourth Proportional to 105,732.88, 145,890.18 and 60,425.74

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Solution

The fourth proportional to 105,732.88, 145,890.18 and 60,425.74 is: 83,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,732.88 : 145,890.18 = 60,425.74 : x
  2. Step 2: Convert to fraction form
    105,732.88/145,890.18 = 60,425.74/x
  3. Step 3: Cross multiply
    105,732.88x = 145,890.18 × 60,425.74
  4. Step 4: Simplify right side
    105,732.88x = 8,815,522,085.23
  5. Step 5: Solve for x
    x = 8,815,522,085.23/105,732.88
  6. Step 6: Final answer
    x = 83,375.41

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1.5x scale

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.