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Finding the Fourth Proportional to 66,545.64, 91,788.90 and 48,366.44

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Solution

The fourth proportional to 66,545.64, 91,788.90 and 48,366.44 is: 66,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,545.64 : 91,788.90 = 48,366.44 : x
  2. Step 2: Convert to fraction form
    66,545.64/91,788.90 = 48,366.44/x
  3. Step 3: Cross multiply
    66,545.64x = 91,788.90 × 48,366.44
  4. Step 4: Simplify right side
    66,545.64x = 4,439,502,324.52
  5. Step 5: Solve for x
    x = 4,439,502,324.52/66,545.64
  6. Step 6: Final answer
    x = 66,713.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.