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Finding the Fourth Proportional to 5,925.20, 8,919.92 and 5,408.52

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Solution

The fourth proportional to 5,925.20, 8,919.92 and 5,408.52 is: 8,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,925.20 : 8,919.92 = 5,408.52 : x
  2. Step 2: Convert to fraction form
    5,925.20/8,919.92 = 5,408.52/x
  3. Step 3: Cross multiply
    5,925.20x = 8,919.92 × 5,408.52
  4. Step 4: Simplify right side
    5,925.20x = 48,243,595.96
  5. Step 5: Solve for x
    x = 48,243,595.96/5,925.20
  6. Step 6: Final answer
    x = 8,142.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.