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Finding the Fourth Proportional to 106,650.28, 147,243.95 and 67,909.96

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Solution

The fourth proportional to 106,650.28, 147,243.95 and 67,909.96 is: 93,758.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,650.28 : 147,243.95 = 67,909.96 : x
  2. Step 2: Convert to fraction form
    106,650.28/147,243.95 = 67,909.96/x
  3. Step 3: Cross multiply
    106,650.28x = 147,243.95 × 67,909.96
  4. Step 4: Simplify right side
    106,650.28x = 9,999,330,754.74
  5. Step 5: Solve for x
    x = 9,999,330,754.74/106,650.28
  6. Step 6: Final answer
    x = 93,758.13

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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.