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Finding the Fourth Proportional to 28,814.59, 39,764.88 and 16,069.87

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Solution

The fourth proportional to 28,814.59, 39,764.88 and 16,069.87 is: 22,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.59 : 39,764.88 = 16,069.87 : x
  2. Step 2: Convert to fraction form
    28,814.59/39,764.88 = 16,069.87/x
  3. Step 3: Cross multiply
    28,814.59x = 39,764.88 × 16,069.87
  4. Step 4: Simplify right side
    28,814.59x = 639,016,452.17
  5. Step 5: Solve for x
    x = 639,016,452.17/28,814.59
  6. Step 6: Final answer
    x = 22,176.84

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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.