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Finding the Fourth Proportional to 153,591.10, 211,930.03 and 85,593.17

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Solution

The fourth proportional to 153,591.10, 211,930.03 and 85,593.17 is: 118,104.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,591.10 : 211,930.03 = 85,593.17 : x
  2. Step 2: Convert to fraction form
    153,591.10/211,930.03 = 85,593.17/x
  3. Step 3: Cross multiply
    153,591.10x = 211,930.03 × 85,593.17
  4. Step 4: Simplify right side
    153,591.10x = 18,139,763,085.90
  5. Step 5: Solve for x
    x = 18,139,763,085.90/153,591.10
  6. Step 6: Final answer
    x = 118,104.26

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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.