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Finding the Fourth Proportional to 66,366.72, 91,575.68 and 38,068.48

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Solution

The fourth proportional to 66,366.72, 91,575.68 and 38,068.48 is: 52,528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.72 : 91,575.68 = 38,068.48 : x
  2. Step 2: Convert to fraction form
    66,366.72/91,575.68 = 38,068.48/x
  3. Step 3: Cross multiply
    66,366.72x = 91,575.68 × 38,068.48
  4. Step 4: Simplify right side
    66,366.72x = 3,486,146,942.57
  5. Step 5: Solve for x
    x = 3,486,146,942.57/66,366.72
  6. Step 6: Final answer
    x = 52,528.54

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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.