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Finding the Fourth Proportional to 207,385.20, 310,732.20 and 194,943.60

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Solution

The fourth proportional to 207,385.20, 310,732.20 and 194,943.60 is: 292,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,385.20 : 310,732.20 = 194,943.60 : x
  2. Step 2: Convert to fraction form
    207,385.20/310,732.20 = 194,943.60/x
  3. Step 3: Cross multiply
    207,385.20x = 310,732.20 × 194,943.60
  4. Step 4: Simplify right side
    207,385.20x = 60,575,253,703.92
  5. Step 5: Solve for x
    x = 60,575,253,703.92/207,385.20
  6. Step 6: Final answer
    x = 292,090.53

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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.