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Finding the Fourth Proportional to 417,007.20, 625,510.80 and 248,717.55

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Solution

The fourth proportional to 417,007.20, 625,510.80 and 248,717.55 is: 373,076.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,007.20 : 625,510.80 = 248,717.55 : x
  2. Step 2: Convert to fraction form
    417,007.20/625,510.80 = 248,717.55/x
  3. Step 3: Cross multiply
    417,007.20x = 625,510.80 × 248,717.55
  4. Step 4: Simplify right side
    417,007.20x = 155,575,513,674.54
  5. Step 5: Solve for x
    x = 155,575,513,674.54/417,007.20
  6. Step 6: Final answer
    x = 373,076.33

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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.