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Finding the Fourth Proportional to 91,195.52, 136,836.60 and 63,158.72

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Solution

The fourth proportional to 91,195.52, 136,836.60 and 63,158.72 is: 94,768.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,195.52 : 136,836.60 = 63,158.72 : x
  2. Step 2: Convert to fraction form
    91,195.52/136,836.60 = 63,158.72/x
  3. Step 3: Cross multiply
    91,195.52x = 136,836.60 × 63,158.72
  4. Step 4: Simplify right side
    91,195.52x = 8,642,424,505.15
  5. Step 5: Solve for x
    x = 8,642,424,505.15/91,195.52
  6. Step 6: Final answer
    x = 94,768.08

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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.