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Finding the Fourth Proportional to 28,005.68, 38,649.36 and 16,068.92

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Solution

The fourth proportional to 28,005.68, 38,649.36 and 16,068.92 is: 22,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.68 : 38,649.36 = 16,068.92 : x
  2. Step 2: Convert to fraction form
    28,005.68/38,649.36 = 16,068.92/x
  3. Step 3: Cross multiply
    28,005.68x = 38,649.36 × 16,068.92
  4. Step 4: Simplify right side
    28,005.68x = 621,053,473.89
  5. Step 5: Solve for x
    x = 621,053,473.89/28,005.68
  6. Step 6: Final answer
    x = 22,175.98

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Similar ratio
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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.