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Finding the Fourth Proportional to 519,999.40, 780,258.30 and 295,532.20

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Solution

The fourth proportional to 519,999.40, 780,258.30 and 295,532.20 is: 443,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,999.40 : 780,258.30 = 295,532.20 : x
  2. Step 2: Convert to fraction form
    519,999.40/780,258.30 = 295,532.20/x
  3. Step 3: Cross multiply
    519,999.40x = 780,258.30 × 295,532.20
  4. Step 4: Simplify right side
    519,999.40x = 230,591,451,967.26
  5. Step 5: Solve for x
    x = 230,591,451,967.26/519,999.40
  6. Step 6: Final answer
    x = 443,445.61

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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.