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Finding the Fourth Proportional to 5,390.60, 8,085.90 and 1,494.68

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Solution

The fourth proportional to 5,390.60, 8,085.90 and 1,494.68 is: 2,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.60 : 8,085.90 = 1,494.68 : x
  2. Step 2: Convert to fraction form
    5,390.60/8,085.90 = 1,494.68/x
  3. Step 3: Cross multiply
    5,390.60x = 8,085.90 × 1,494.68
  4. Step 4: Simplify right side
    5,390.60x = 12,085,833.01
  5. Step 5: Solve for x
    x = 12,085,833.01/5,390.60
  6. Step 6: Final answer
    x = 2,242.02

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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.