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Finding the Fourth Proportional to 66,411.62, 91,646.88 and 36,197.30

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Solution

The fourth proportional to 66,411.62, 91,646.88 and 36,197.30 is: 49,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.62 : 91,646.88 = 36,197.30 : x
  2. Step 2: Convert to fraction form
    66,411.62/91,646.88 = 36,197.30/x
  3. Step 3: Cross multiply
    66,411.62x = 91,646.88 × 36,197.30
  4. Step 4: Simplify right side
    66,411.62x = 3,317,369,151.19
  5. Step 5: Solve for x
    x = 3,317,369,151.19/66,411.62
  6. Step 6: Final answer
    x = 49,951.64

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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.