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Finding the Fourth Proportional to 1,652.25, 2,476.53 and 831.24

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Solution

The fourth proportional to 1,652.25, 2,476.53 and 831.24 is: 1,245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.25 : 2,476.53 = 831.24 : x
  2. Step 2: Convert to fraction form
    1,652.25/2,476.53 = 831.24/x
  3. Step 3: Cross multiply
    1,652.25x = 2,476.53 × 831.24
  4. Step 4: Simplify right side
    1,652.25x = 2,058,590.80
  5. Step 5: Solve for x
    x = 2,058,590.80/1,652.25
  6. Step 6: Final answer
    x = 1,245.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.