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Finding the Fourth Proportional to 121,013.10, 169,593.30 and 121,013.10

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Solution

The fourth proportional to 121,013.10, 169,593.30 and 121,013.10 is: 169,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,013.10 : 169,593.30 = 121,013.10 : x
  2. Step 2: Convert to fraction form
    121,013.10/169,593.30 = 121,013.10/x
  3. Step 3: Cross multiply
    121,013.10x = 169,593.30 × 121,013.10
  4. Step 4: Simplify right side
    121,013.10x = 20,523,010,972.23
  5. Step 5: Solve for x
    x = 20,523,010,972.23/121,013.10
  6. Step 6: Final answer
    x = 169,593.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.