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Finding the Fourth Proportional to 576,024.40, 864,036.60 and 398,731.60

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Solution

The fourth proportional to 576,024.40, 864,036.60 and 398,731.60 is: 598,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,024.40 : 864,036.60 = 398,731.60 : x
  2. Step 2: Convert to fraction form
    576,024.40/864,036.60 = 398,731.60/x
  3. Step 3: Cross multiply
    576,024.40x = 864,036.60 × 398,731.60
  4. Step 4: Simplify right side
    576,024.40x = 344,518,695,976.56
  5. Step 5: Solve for x
    x = 344,518,695,976.56/576,024.40
  6. Step 6: Final answer
    x = 598,097.40

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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.