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Finding the Fourth Proportional to 91,177.60, 136,766.40 and 89,622.40

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Solution

The fourth proportional to 91,177.60, 136,766.40 and 89,622.40 is: 134,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,177.60 : 136,766.40 = 89,622.40 : x
  2. Step 2: Convert to fraction form
    91,177.60/136,766.40 = 89,622.40/x
  3. Step 3: Cross multiply
    91,177.60x = 136,766.40 × 89,622.40
  4. Step 4: Simplify right side
    91,177.60x = 12,257,333,007.36
  5. Step 5: Solve for x
    x = 12,257,333,007.36/91,177.60
  6. Step 6: Final answer
    x = 134,433.60

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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.