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Finding the Fourth Proportional to 359,685.20, 496,377.60 and 196,351.40

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Solution

The fourth proportional to 359,685.20, 496,377.60 and 196,351.40 is: 270,971.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,685.20 : 496,377.60 = 196,351.40 : x
  2. Step 2: Convert to fraction form
    359,685.20/496,377.60 = 196,351.40/x
  3. Step 3: Cross multiply
    359,685.20x = 496,377.60 × 196,351.40
  4. Step 4: Simplify right side
    359,685.20x = 97,464,436,688.64
  5. Step 5: Solve for x
    x = 97,464,436,688.64/359,685.20
  6. Step 6: Final answer
    x = 270,971.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.