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Finding the Fourth Proportional to 518,036.60, 714,879.74 and 288,593.57

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Solution

The fourth proportional to 518,036.60, 714,879.74 and 288,593.57 is: 398,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,036.60 : 714,879.74 = 288,593.57 : x
  2. Step 2: Convert to fraction form
    518,036.60/714,879.74 = 288,593.57/x
  3. Step 3: Cross multiply
    518,036.60x = 714,879.74 × 288,593.57
  4. Step 4: Simplify right side
    518,036.60x = 206,309,696,287.27
  5. Step 5: Solve for x
    x = 206,309,696,287.27/518,036.60
  6. Step 6: Final answer
    x = 398,253.13

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1.5x scale

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.