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Finding the Fourth Proportional to 159,720.10, 239,580.15 and 146,817.70

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Solution

The fourth proportional to 159,720.10, 239,580.15 and 146,817.70 is: 220,226.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,720.10 : 239,580.15 = 146,817.70 : x
  2. Step 2: Convert to fraction form
    159,720.10/239,580.15 = 146,817.70/x
  3. Step 3: Cross multiply
    159,720.10x = 239,580.15 × 146,817.70
  4. Step 4: Simplify right side
    159,720.10x = 35,174,606,588.66
  5. Step 5: Solve for x
    x = 35,174,606,588.66/159,720.10
  6. Step 6: Final answer
    x = 220,226.55

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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.