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Finding the Fourth Proportional to 133,385.90, 199,856.69 and 93,859.95

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Solution

The fourth proportional to 133,385.90, 199,856.69 and 93,859.95 is: 140,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,385.90 : 199,856.69 = 93,859.95 : x
  2. Step 2: Convert to fraction form
    133,385.90/199,856.69 = 93,859.95/x
  3. Step 3: Cross multiply
    133,385.90x = 199,856.69 × 93,859.95
  4. Step 4: Simplify right side
    133,385.90x = 18,758,538,461.27
  5. Step 5: Solve for x
    x = 18,758,538,461.27/133,385.90
  6. Step 6: Final answer
    x = 140,633.60

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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.