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Finding the Fourth Proportional to 374,191.54, 561,508.74 and 137,700.28

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Solution

The fourth proportional to 374,191.54, 561,508.74 and 137,700.28 is: 206,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,191.54 : 561,508.74 = 137,700.28 : x
  2. Step 2: Convert to fraction form
    374,191.54/561,508.74 = 137,700.28/x
  3. Step 3: Cross multiply
    374,191.54x = 561,508.74 × 137,700.28
  4. Step 4: Simplify right side
    374,191.54x = 77,319,910,720.45
  5. Step 5: Solve for x
    x = 77,319,910,720.45/374,191.54
  6. Step 6: Final answer
    x = 206,631.90

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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.