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Finding the Fourth Proportional to 91,197.52, 136,839.60 and 63,160.72

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Solution

The fourth proportional to 91,197.52, 136,839.60 and 63,160.72 is: 94,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,197.52 : 136,839.60 = 63,160.72 : x
  2. Step 2: Convert to fraction form
    91,197.52/136,839.60 = 63,160.72/x
  3. Step 3: Cross multiply
    91,197.52x = 136,839.60 × 63,160.72
  4. Step 4: Simplify right side
    91,197.52x = 8,642,887,660.51
  5. Step 5: Solve for x
    x = 8,642,887,660.51/91,197.52
  6. Step 6: Final answer
    x = 94,771.08

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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.