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Finding the Fourth Proportional to 471,278.28, 707,049.18 and 155,957.16

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Solution

The fourth proportional to 471,278.28, 707,049.18 and 155,957.16 is: 233,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,278.28 : 707,049.18 = 155,957.16 : x
  2. Step 2: Convert to fraction form
    471,278.28/707,049.18 = 155,957.16/x
  3. Step 3: Cross multiply
    471,278.28x = 707,049.18 × 155,957.16
  4. Step 4: Simplify right side
    471,278.28x = 110,269,382,093.13
  5. Step 5: Solve for x
    x = 110,269,382,093.13/471,278.28
  6. Step 6: Final answer
    x = 233,979.34

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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.