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Finding the Fourth Proportional to 25,476.71, 38,179.46 and 21,708.81

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Solution

The fourth proportional to 25,476.71, 38,179.46 and 21,708.81 is: 32,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,476.71 : 38,179.46 = 21,708.81 : x
  2. Step 2: Convert to fraction form
    25,476.71/38,179.46 = 21,708.81/x
  3. Step 3: Cross multiply
    25,476.71x = 38,179.46 × 21,708.81
  4. Step 4: Simplify right side
    25,476.71x = 828,830,643.04
  5. Step 5: Solve for x
    x = 828,830,643.04/25,476.71
  6. Step 6: Final answer
    x = 32,532.88

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