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Finding the Fourth Proportional to 91,353.60, 137,030.40 and 38,764.80

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Solution

The fourth proportional to 91,353.60, 137,030.40 and 38,764.80 is: 58,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,353.60 : 137,030.40 = 38,764.80 : x
  2. Step 2: Convert to fraction form
    91,353.60/137,030.40 = 38,764.80/x
  3. Step 3: Cross multiply
    91,353.60x = 137,030.40 × 38,764.80
  4. Step 4: Simplify right side
    91,353.60x = 5,311,956,049.92
  5. Step 5: Solve for x
    x = 5,311,956,049.92/91,353.60
  6. Step 6: Final answer
    x = 58,147.20

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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.