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Finding the Fourth Proportional to 21,651.71, 32,475.51 and 6,870.33

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Solution

The fourth proportional to 21,651.71, 32,475.51 and 6,870.33 is: 10,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.71 : 32,475.51 = 6,870.33 : x
  2. Step 2: Convert to fraction form
    21,651.71/32,475.51 = 6,870.33/x
  3. Step 3: Cross multiply
    21,651.71x = 32,475.51 × 6,870.33
  4. Step 4: Simplify right side
    21,651.71x = 223,117,470.62
  5. Step 5: Solve for x
    x = 223,117,470.62/21,651.71
  6. Step 6: Final answer
    x = 10,304.85

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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.