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Finding the Fourth Proportional to 893,687.56, 1,234,542 and 812,972.68

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Solution

The fourth proportional to 893,687.56, 1,234,542 and 812,972.68 is: 1,123,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,687.56 : 1,234,542 = 812,972.68 : x
  2. Step 2: Convert to fraction form
    893,687.56/1,234,542 = 812,972.68/x
  3. Step 3: Cross multiply
    893,687.56x = 1,234,542 × 812,972.68
  4. Step 4: Simplify right side
    893,687.56x = 1,003,648,918,312.56
  5. Step 5: Solve for x
    x = 1,003,648,918,312.56/893,687.56
  6. Step 6: Final answer
    x = 1,123,042.28

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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.