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Finding the Fourth Proportional to 4,700.86, 6,487.44 and 2,605

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Solution

The fourth proportional to 4,700.86, 6,487.44 and 2,605 is: 3,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,700.86 : 6,487.44 = 2,605 : x
  2. Step 2: Convert to fraction form
    4,700.86/6,487.44 = 2,605/x
  3. Step 3: Cross multiply
    4,700.86x = 6,487.44 × 2,605
  4. Step 4: Simplify right side
    4,700.86x = 16,899,781.20
  5. Step 5: Solve for x
    x = 16,899,781.20/4,700.86
  6. Step 6: Final answer
    x = 3,595.04

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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.