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Finding the Fourth Proportional to 279,893.57, 386,253.14 and 152,569.17

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Solution

The fourth proportional to 279,893.57, 386,253.14 and 152,569.17 is: 210,545.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,893.57 : 386,253.14 = 152,569.17 : x
  2. Step 2: Convert to fraction form
    279,893.57/386,253.14 = 152,569.17/x
  3. Step 3: Cross multiply
    279,893.57x = 386,253.14 × 152,569.17
  4. Step 4: Simplify right side
    279,893.57x = 58,930,319,048.43
  5. Step 5: Solve for x
    x = 58,930,319,048.43/279,893.57
  6. Step 6: Final answer
    x = 210,545.46

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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.