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Finding the Fourth Proportional to 315,932.38, 473,898.56 and 126,478.03

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Solution

The fourth proportional to 315,932.38, 473,898.56 and 126,478.03 is: 189,717.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,932.38 : 473,898.56 = 126,478.03 : x
  2. Step 2: Convert to fraction form
    315,932.38/473,898.56 = 126,478.03/x
  3. Step 3: Cross multiply
    315,932.38x = 473,898.56 × 126,478.03
  4. Step 4: Simplify right side
    315,932.38x = 59,937,756,288.64
  5. Step 5: Solve for x
    x = 59,937,756,288.64/315,932.38
  6. Step 6: Final answer
    x = 189,717.04

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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.