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Finding the Fourth Proportional to 160,537.20, 240,719.40 and 66,937.20

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Solution

The fourth proportional to 160,537.20, 240,719.40 and 66,937.20 is: 100,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,537.20 : 240,719.40 = 66,937.20 : x
  2. Step 2: Convert to fraction form
    160,537.20/240,719.40 = 66,937.20/x
  3. Step 3: Cross multiply
    160,537.20x = 240,719.40 × 66,937.20
  4. Step 4: Simplify right side
    160,537.20x = 16,113,082,621.68
  5. Step 5: Solve for x
    x = 16,113,082,621.68/160,537.20
  6. Step 6: Final answer
    x = 100,369.77

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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.