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Finding the Fourth Proportional to 1,060.61, 1,463.81 and 618.62

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Solution

The fourth proportional to 1,060.61, 1,463.81 and 618.62 is: 853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.61 : 1,463.81 = 618.62 : x
  2. Step 2: Convert to fraction form
    1,060.61/1,463.81 = 618.62/x
  3. Step 3: Cross multiply
    1,060.61x = 1,463.81 × 618.62
  4. Step 4: Simplify right side
    1,060.61x = 905,531.73
  5. Step 5: Solve for x
    x = 905,531.73/1,060.61
  6. Step 6: Final answer
    x = 853.79

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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.