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Finding the Fourth Proportional to 131,158.40, 197,126.40 and 114,051.20

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Solution

The fourth proportional to 131,158.40, 197,126.40 and 114,051.20 is: 171,414.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,158.40 : 197,126.40 = 114,051.20 : x
  2. Step 2: Convert to fraction form
    131,158.40/197,126.40 = 114,051.20/x
  3. Step 3: Cross multiply
    131,158.40x = 197,126.40 × 114,051.20
  4. Step 4: Simplify right side
    131,158.40x = 22,482,502,471.68
  5. Step 5: Solve for x
    x = 22,482,502,471.68/131,158.40
  6. Step 6: Final answer
    x = 171,414.89

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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.