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Finding the Fourth Proportional to 101,065.70, 151,707.90 and 56,778.95

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Solution

The fourth proportional to 101,065.70, 151,707.90 and 56,778.95 is: 85,229.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,065.70 : 151,707.90 = 56,778.95 : x
  2. Step 2: Convert to fraction form
    101,065.70/151,707.90 = 56,778.95/x
  3. Step 3: Cross multiply
    101,065.70x = 151,707.90 × 56,778.95
  4. Step 4: Simplify right side
    101,065.70x = 8,613,815,268.71
  5. Step 5: Solve for x
    x = 8,613,815,268.71/101,065.70
  6. Step 6: Final answer
    x = 85,229.86

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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.