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Finding the Fourth Proportional to 118,564.68, 163,624.50 and 68,279.88

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Solution

The fourth proportional to 118,564.68, 163,624.50 and 68,279.88 is: 94,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,564.68 : 163,624.50 = 68,279.88 : x
  2. Step 2: Convert to fraction form
    118,564.68/163,624.50 = 68,279.88/x
  3. Step 3: Cross multiply
    118,564.68x = 163,624.50 × 68,279.88
  4. Step 4: Simplify right side
    118,564.68x = 11,172,261,225.06
  5. Step 5: Solve for x
    x = 11,172,261,225.06/118,564.68
  6. Step 6: Final answer
    x = 94,229.25

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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.