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Finding the Fourth Proportional to 5,872.79, 8,809.19 and 2,585.90

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Solution

The fourth proportional to 5,872.79, 8,809.19 and 2,585.90 is: 3,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,872.79 : 8,809.19 = 2,585.90 : x
  2. Step 2: Convert to fraction form
    5,872.79/8,809.19 = 2,585.90/x
  3. Step 3: Cross multiply
    5,872.79x = 8,809.19 × 2,585.90
  4. Step 4: Simplify right side
    5,872.79x = 22,779,671.49
  5. Step 5: Solve for x
    x = 22,779,671.49/5,872.79
  6. Step 6: Final answer
    x = 3,878.85

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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.