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Finding the Fourth Proportional to 518,036.61, 714,879.73 and 288,593.58

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Solution

The fourth proportional to 518,036.61, 714,879.73 and 288,593.58 is: 398,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,036.61 : 714,879.73 = 288,593.58 : x
  2. Step 2: Convert to fraction form
    518,036.61/714,879.73 = 288,593.58/x
  3. Step 3: Cross multiply
    518,036.61x = 714,879.73 × 288,593.58
  4. Step 4: Simplify right side
    518,036.61x = 206,309,700,550.13
  5. Step 5: Solve for x
    x = 206,309,700,550.13/518,036.61
  6. Step 6: Final answer
    x = 398,253.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.