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Finding the Fourth Proportional to 118,890.88, 178,366.08 and 83,898.88

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Solution

The fourth proportional to 118,890.88, 178,366.08 and 83,898.88 is: 125,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,890.88 : 178,366.08 = 83,898.88 : x
  2. Step 2: Convert to fraction form
    118,890.88/178,366.08 = 83,898.88/x
  3. Step 3: Cross multiply
    118,890.88x = 178,366.08 × 83,898.88
  4. Step 4: Simplify right side
    118,890.88x = 14,964,714,341.99
  5. Step 5: Solve for x
    x = 14,964,714,341.99/118,890.88
  6. Step 6: Final answer
    x = 125,869.32

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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.