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Finding the Fourth Proportional to 331,065.60, 496,598.40 and 198,355.20

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Solution

The fourth proportional to 331,065.60, 496,598.40 and 198,355.20 is: 297,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,065.60 : 496,598.40 = 198,355.20 : x
  2. Step 2: Convert to fraction form
    331,065.60/496,598.40 = 198,355.20/x
  3. Step 3: Cross multiply
    331,065.60x = 496,598.40 × 198,355.20
  4. Step 4: Simplify right side
    331,065.60x = 98,502,874,951.68
  5. Step 5: Solve for x
    x = 98,502,874,951.68/331,065.60
  6. Step 6: Final answer
    x = 297,532.80

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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.