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Finding the Fourth Proportional to 21,679.92, 32,527.92 and 13,263.72

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Solution

The fourth proportional to 21,679.92, 32,527.92 and 13,263.72 is: 19,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.92 : 32,527.92 = 13,263.72 : x
  2. Step 2: Convert to fraction form
    21,679.92/32,527.92 = 13,263.72/x
  3. Step 3: Cross multiply
    21,679.92x = 32,527.92 × 13,263.72
  4. Step 4: Simplify right side
    21,679.92x = 431,441,223.06
  5. Step 5: Solve for x
    x = 431,441,223.06/21,679.92
  6. Step 6: Final answer
    x = 19,900.50

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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.