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Finding the Fourth Proportional to 91,859.80, 137,789.70 and 62,116.60

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Solution

The fourth proportional to 91,859.80, 137,789.70 and 62,116.60 is: 93,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,859.80 : 137,789.70 = 62,116.60 : x
  2. Step 2: Convert to fraction form
    91,859.80/137,789.70 = 62,116.60/x
  3. Step 3: Cross multiply
    91,859.80x = 137,789.70 × 62,116.60
  4. Step 4: Simplify right side
    91,859.80x = 8,559,027,679.02
  5. Step 5: Solve for x
    x = 8,559,027,679.02/91,859.80
  6. Step 6: Final answer
    x = 93,174.90

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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.