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Finding the Fourth Proportional to 1,065.75, 1,470.67 and 593.61

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Solution

The fourth proportional to 1,065.75, 1,470.67 and 593.61 is: 819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.75 : 1,470.67 = 593.61 : x
  2. Step 2: Convert to fraction form
    1,065.75/1,470.67 = 593.61/x
  3. Step 3: Cross multiply
    1,065.75x = 1,470.67 × 593.61
  4. Step 4: Simplify right side
    1,065.75x = 873,009.96
  5. Step 5: Solve for x
    x = 873,009.96/1,065.75
  6. Step 6: Final answer
    x = 819.15

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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.