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Finding the Fourth Proportional to 25,202.62, 37,831.80 and 21,302.20

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Solution

The fourth proportional to 25,202.62, 37,831.80 and 21,302.20 is: 31,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,202.62 : 37,831.80 = 21,302.20 : x
  2. Step 2: Convert to fraction form
    25,202.62/37,831.80 = 21,302.20/x
  3. Step 3: Cross multiply
    25,202.62x = 37,831.80 × 21,302.20
  4. Step 4: Simplify right side
    25,202.62x = 805,900,569.96
  5. Step 5: Solve for x
    x = 805,900,569.96/25,202.62
  6. Step 6: Final answer
    x = 31,976.86

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1.5x scale

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.