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Finding the Fourth Proportional to 325,659.60, 488,489.40 and 293,000.40

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Solution

The fourth proportional to 325,659.60, 488,489.40 and 293,000.40 is: 439,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,659.60 : 488,489.40 = 293,000.40 : x
  2. Step 2: Convert to fraction form
    325,659.60/488,489.40 = 293,000.40/x
  3. Step 3: Cross multiply
    325,659.60x = 488,489.40 × 293,000.40
  4. Step 4: Simplify right side
    325,659.60x = 143,127,589,595.76
  5. Step 5: Solve for x
    x = 143,127,589,595.76/325,659.60
  6. Step 6: Final answer
    x = 439,500.60

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Similar ratio
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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.