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Finding the Fourth Proportional to 664,824.70, 996,690.30 and 286,036.30

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Solution

The fourth proportional to 664,824.70, 996,690.30 and 286,036.30 is: 428,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,824.70 : 996,690.30 = 286,036.30 : x
  2. Step 2: Convert to fraction form
    664,824.70/996,690.30 = 286,036.30/x
  3. Step 3: Cross multiply
    664,824.70x = 996,690.30 × 286,036.30
  4. Step 4: Simplify right side
    664,824.70x = 285,089,605,657.89
  5. Step 5: Solve for x
    x = 285,089,605,657.89/664,824.70
  6. Step 6: Final answer
    x = 428,819.21

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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.