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Finding the Fourth Proportional to 91,234.52, 136,895.12 and 63,197.72

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Solution

The fourth proportional to 91,234.52, 136,895.12 and 63,197.72 is: 94,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,234.52 : 136,895.12 = 63,197.72 : x
  2. Step 2: Convert to fraction form
    91,234.52/136,895.12 = 63,197.72/x
  3. Step 3: Cross multiply
    91,234.52x = 136,895.12 × 63,197.72
  4. Step 4: Simplify right side
    91,234.52x = 8,651,459,463.13
  5. Step 5: Solve for x
    x = 8,651,459,463.13/91,234.52
  6. Step 6: Final answer
    x = 94,826.60

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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.