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Finding the Fourth Proportional to 400,036.44, 551,790.18 and 256,569.24

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Solution

The fourth proportional to 400,036.44, 551,790.18 and 256,569.24 is: 353,898.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,036.44 : 551,790.18 = 256,569.24 : x
  2. Step 2: Convert to fraction form
    400,036.44/551,790.18 = 256,569.24/x
  3. Step 3: Cross multiply
    400,036.44x = 551,790.18 × 256,569.24
  4. Step 4: Simplify right side
    400,036.44x = 141,572,387,122.06
  5. Step 5: Solve for x
    x = 141,572,387,122.06/400,036.44
  6. Step 6: Final answer
    x = 353,898.73

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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.