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Finding the Fourth Proportional to 1,009.16, 1,392.48 and 566.96

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Solution

The fourth proportional to 1,009.16, 1,392.48 and 566.96 is: 782.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.16 : 1,392.48 = 566.96 : x
  2. Step 2: Convert to fraction form
    1,009.16/1,392.48 = 566.96/x
  3. Step 3: Cross multiply
    1,009.16x = 1,392.48 × 566.96
  4. Step 4: Simplify right side
    1,009.16x = 789,480.46
  5. Step 5: Solve for x
    x = 789,480.46/1,009.16
  6. Step 6: Final answer
    x = 782.31

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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.