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Finding the Fourth Proportional to 576,519.16, 864,311.28 and 239,811.72

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Solution

The fourth proportional to 576,519.16, 864,311.28 and 239,811.72 is: 359,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,519.16 : 864,311.28 = 239,811.72 : x
  2. Step 2: Convert to fraction form
    576,519.16/864,311.28 = 239,811.72/x
  3. Step 3: Cross multiply
    576,519.16x = 864,311.28 × 239,811.72
  4. Step 4: Simplify right side
    576,519.16x = 207,271,974,672.20
  5. Step 5: Solve for x
    x = 207,271,974,672.20/576,519.16
  6. Step 6: Final answer
    x = 359,523.13

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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.