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Finding the Fourth Proportional to 5,861.60, 8,101.20 and 4,695.20

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Solution

The fourth proportional to 5,861.60, 8,101.20 and 4,695.20 is: 6,489.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.60 : 8,101.20 = 4,695.20 : x
  2. Step 2: Convert to fraction form
    5,861.60/8,101.20 = 4,695.20/x
  3. Step 3: Cross multiply
    5,861.60x = 8,101.20 × 4,695.20
  4. Step 4: Simplify right side
    5,861.60x = 38,036,754.24
  5. Step 5: Solve for x
    x = 38,036,754.24/5,861.60
  6. Step 6: Final answer
    x = 6,489.14

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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.