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Finding the Fourth Proportional to 91,252.52, 136,922.10 and 63,215.72

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Solution

The fourth proportional to 91,252.52, 136,922.10 and 63,215.72 is: 94,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,252.52 : 136,922.10 = 63,215.72 : x
  2. Step 2: Convert to fraction form
    91,252.52/136,922.10 = 63,215.72/x
  3. Step 3: Cross multiply
    91,252.52x = 136,922.10 × 63,215.72
  4. Step 4: Simplify right side
    91,252.52x = 8,655,629,135.41
  5. Step 5: Solve for x
    x = 8,655,629,135.41/91,252.52
  6. Step 6: Final answer
    x = 94,853.59

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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.