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Finding the Fourth Proportional to 261,574.92, 392,359.64 and 173,223.72

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Solution

The fourth proportional to 261,574.92, 392,359.64 and 173,223.72 is: 259,833.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,574.92 : 392,359.64 = 173,223.72 : x
  2. Step 2: Convert to fraction form
    261,574.92/392,359.64 = 173,223.72/x
  3. Step 3: Cross multiply
    261,574.92x = 392,359.64 × 173,223.72
  4. Step 4: Simplify right side
    261,574.92x = 67,965,995,552.54
  5. Step 5: Solve for x
    x = 67,965,995,552.54/261,574.92
  6. Step 6: Final answer
    x = 259,833.76

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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.