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Finding the Fourth Proportional to 91,237.60, 136,856.40 and 59,744.80

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Solution

The fourth proportional to 91,237.60, 136,856.40 and 59,744.80 is: 89,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,237.60 : 136,856.40 = 59,744.80 : x
  2. Step 2: Convert to fraction form
    91,237.60/136,856.40 = 59,744.80/x
  3. Step 3: Cross multiply
    91,237.60x = 136,856.40 × 59,744.80
  4. Step 4: Simplify right side
    91,237.60x = 8,176,458,246.72
  5. Step 5: Solve for x
    x = 8,176,458,246.72/91,237.60
  6. Step 6: Final answer
    x = 89,617.20

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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.