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Finding the Fourth Proportional to 400,687.76, 552,949.32 and 249,785.36

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Solution

The fourth proportional to 400,687.76, 552,949.32 and 249,785.36 is: 344,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,687.76 : 552,949.32 = 249,785.36 : x
  2. Step 2: Convert to fraction form
    400,687.76/552,949.32 = 249,785.36/x
  3. Step 3: Cross multiply
    400,687.76x = 552,949.32 × 249,785.36
  4. Step 4: Simplify right side
    400,687.76x = 138,118,644,957.96
  5. Step 5: Solve for x
    x = 138,118,644,957.96/400,687.76
  6. Step 6: Final answer
    x = 344,703.93

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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.