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Finding the Fourth Proportional to 28,244.70, 38,981.14 and 16,308.01

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Solution

The fourth proportional to 28,244.70, 38,981.14 and 16,308.01 is: 22,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.70 : 38,981.14 = 16,308.01 : x
  2. Step 2: Convert to fraction form
    28,244.70/38,981.14 = 16,308.01/x
  3. Step 3: Cross multiply
    28,244.70x = 38,981.14 × 16,308.01
  4. Step 4: Simplify right side
    28,244.70x = 635,704,901.98
  5. Step 5: Solve for x
    x = 635,704,901.98/28,244.70
  6. Step 6: Final answer
    x = 22,507.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.