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Finding the Fourth Proportional to 91,897.90, 126,834.12 and 63,193.52

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Solution

The fourth proportional to 91,897.90, 126,834.12 and 63,193.52 is: 87,217.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,897.90 : 126,834.12 = 63,193.52 : x
  2. Step 2: Convert to fraction form
    91,897.90/126,834.12 = 63,193.52/x
  3. Step 3: Cross multiply
    91,897.90x = 126,834.12 × 63,193.52
  4. Step 4: Simplify right side
    91,897.90x = 8,015,094,498.90
  5. Step 5: Solve for x
    x = 8,015,094,498.90/91,897.90
  6. Step 6: Final answer
    x = 87,217.38

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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.