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Finding the Fourth Proportional to 101,591.56, 140,156.28 and 63,328.78

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Solution

The fourth proportional to 101,591.56, 140,156.28 and 63,328.78 is: 87,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,591.56 : 140,156.28 = 63,328.78 : x
  2. Step 2: Convert to fraction form
    101,591.56/140,156.28 = 63,328.78/x
  3. Step 3: Cross multiply
    101,591.56x = 140,156.28 × 63,328.78
  4. Step 4: Simplify right side
    101,591.56x = 8,875,926,221.74
  5. Step 5: Solve for x
    x = 8,875,926,221.74/101,591.56
  6. Step 6: Final answer
    x = 87,368.74

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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.