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Finding the Fourth Proportional to 19,249.92, 28,874.88 and 12,368.16

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Solution

The fourth proportional to 19,249.92, 28,874.88 and 12,368.16 is: 18,552.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,249.92 : 28,874.88 = 12,368.16 : x
  2. Step 2: Convert to fraction form
    19,249.92/28,874.88 = 12,368.16/x
  3. Step 3: Cross multiply
    19,249.92x = 28,874.88 × 12,368.16
  4. Step 4: Simplify right side
    19,249.92x = 357,129,135.82
  5. Step 5: Solve for x
    x = 357,129,135.82/19,249.92
  6. Step 6: Final answer
    x = 18,552.24

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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.