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Finding the Fourth Proportional to 5,861.61, 8,791.74 and 1,478.84

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Solution

The fourth proportional to 5,861.61, 8,791.74 and 1,478.84 is: 2,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.61 : 8,791.74 = 1,478.84 : x
  2. Step 2: Convert to fraction form
    5,861.61/8,791.74 = 1,478.84/x
  3. Step 3: Cross multiply
    5,861.61x = 8,791.74 × 1,478.84
  4. Step 4: Simplify right side
    5,861.61x = 13,001,532.82
  5. Step 5: Solve for x
    x = 13,001,532.82/5,861.61
  6. Step 6: Final answer
    x = 2,218.08

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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.