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Finding the Fourth Proportional to 28,424.01, 42,642.18 and 10,893.86

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Solution

The fourth proportional to 28,424.01, 42,642.18 and 10,893.86 is: 16,343.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.01 : 42,642.18 = 10,893.86 : x
  2. Step 2: Convert to fraction form
    28,424.01/42,642.18 = 10,893.86/x
  3. Step 3: Cross multiply
    28,424.01x = 42,642.18 × 10,893.86
  4. Step 4: Simplify right side
    28,424.01x = 464,537,725.80
  5. Step 5: Solve for x
    x = 464,537,725.80/28,424.01
  6. Step 6: Final answer
    x = 16,343.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.