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Finding the Fourth Proportional to 66,565.60, 91,864.26 and 36,353.72

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Solution

The fourth proportional to 66,565.60, 91,864.26 and 36,353.72 is: 50,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.60 : 91,864.26 = 36,353.72 : x
  2. Step 2: Convert to fraction form
    66,565.60/91,864.26 = 36,353.72/x
  3. Step 3: Cross multiply
    66,565.60x = 91,864.26 × 36,353.72
  4. Step 4: Simplify right side
    66,565.60x = 3,339,607,815.71
  5. Step 5: Solve for x
    x = 3,339,607,815.71/66,565.60
  6. Step 6: Final answer
    x = 50,170.18

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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.