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Finding the Fourth Proportional to 28,168.93, 38,872.90 and 16,232.01

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Solution

The fourth proportional to 28,168.93, 38,872.90 and 16,232.01 is: 22,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.93 : 38,872.90 = 16,232.01 : x
  2. Step 2: Convert to fraction form
    28,168.93/38,872.90 = 16,232.01/x
  3. Step 3: Cross multiply
    28,168.93x = 38,872.90 × 16,232.01
  4. Step 4: Simplify right side
    28,168.93x = 630,985,301.53
  5. Step 5: Solve for x
    x = 630,985,301.53/28,168.93
  6. Step 6: Final answer
    x = 22,400.05

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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.