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Finding the Fourth Proportional to 444,856.20, 665,972.10 and 392,368.20

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Solution

The fourth proportional to 444,856.20, 665,972.10 and 392,368.20 is: 587,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,856.20 : 665,972.10 = 392,368.20 : x
  2. Step 2: Convert to fraction form
    444,856.20/665,972.10 = 392,368.20/x
  3. Step 3: Cross multiply
    444,856.20x = 665,972.10 × 392,368.20
  4. Step 4: Simplify right side
    444,856.20x = 261,306,274,127.22
  5. Step 5: Solve for x
    x = 261,306,274,127.22/444,856.20
  6. Step 6: Final answer
    x = 587,394.92

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1.5x scale

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.