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Finding the Fourth Proportional to 118,436.16, 177,689.88 and 43,592.16

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Solution

The fourth proportional to 118,436.16, 177,689.88 and 43,592.16 is: 65,401.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,436.16 : 177,689.88 = 43,592.16 : x
  2. Step 2: Convert to fraction form
    118,436.16/177,689.88 = 43,592.16/x
  3. Step 3: Cross multiply
    118,436.16x = 177,689.88 × 43,592.16
  4. Step 4: Simplify right side
    118,436.16x = 7,745,885,679.34
  5. Step 5: Solve for x
    x = 7,745,885,679.34/118,436.16
  6. Step 6: Final answer
    x = 65,401.36

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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.