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Finding the Fourth Proportional to 342,931.28, 473,234.46 and 189,963.32

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Solution

The fourth proportional to 342,931.28, 473,234.46 and 189,963.32 is: 262,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,931.28 : 473,234.46 = 189,963.32 : x
  2. Step 2: Convert to fraction form
    342,931.28/473,234.46 = 189,963.32/x
  3. Step 3: Cross multiply
    342,931.28x = 473,234.46 × 189,963.32
  4. Step 4: Simplify right side
    342,931.28x = 89,897,189,160.01
  5. Step 5: Solve for x
    x = 89,897,189,160.01/342,931.28
  6. Step 6: Final answer
    x = 262,143.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.