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Finding the Fourth Proportional to 91,359.60, 137,039.40 and 59,866.80

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Solution

The fourth proportional to 91,359.60, 137,039.40 and 59,866.80 is: 89,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,359.60 : 137,039.40 = 59,866.80 : x
  2. Step 2: Convert to fraction form
    91,359.60/137,039.40 = 59,866.80/x
  3. Step 3: Cross multiply
    91,359.60x = 137,039.40 × 59,866.80
  4. Step 4: Simplify right side
    91,359.60x = 8,204,110,351.92
  5. Step 5: Solve for x
    x = 8,204,110,351.92/91,359.60
  6. Step 6: Final answer
    x = 89,800.20

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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.