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Finding the Fourth Proportional to 118,103.12, 176,988.90 and 64,657.70

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Solution

The fourth proportional to 118,103.12, 176,988.90 and 64,657.70 is: 96,895.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,103.12 : 176,988.90 = 64,657.70 : x
  2. Step 2: Convert to fraction form
    118,103.12/176,988.90 = 64,657.70/x
  3. Step 3: Cross multiply
    118,103.12x = 176,988.90 × 64,657.70
  4. Step 4: Simplify right side
    118,103.12x = 11,443,695,199.53
  5. Step 5: Solve for x
    x = 11,443,695,199.53/118,103.12
  6. Step 6: Final answer
    x = 96,895.79

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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.