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Finding the Fourth Proportional to 28,001.66, 38,640.71 and 16,063.88

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Solution

The fourth proportional to 28,001.66, 38,640.71 and 16,063.88 is: 22,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.66 : 38,640.71 = 16,063.88 : x
  2. Step 2: Convert to fraction form
    28,001.66/38,640.71 = 16,063.88/x
  3. Step 3: Cross multiply
    28,001.66x = 38,640.71 × 16,063.88
  4. Step 4: Simplify right side
    28,001.66x = 620,719,575.51
  5. Step 5: Solve for x
    x = 620,719,575.51/28,001.66
  6. Step 6: Final answer
    x = 22,167.25

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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.