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Finding the Fourth Proportional to 354,992.80, 532,359.60 and 118,343.20

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Solution

The fourth proportional to 354,992.80, 532,359.60 and 118,343.20 is: 177,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,992.80 : 532,359.60 = 118,343.20 : x
  2. Step 2: Convert to fraction form
    354,992.80/532,359.60 = 118,343.20/x
  3. Step 3: Cross multiply
    354,992.80x = 532,359.60 × 118,343.20
  4. Step 4: Simplify right side
    354,992.80x = 63,001,138,614.72
  5. Step 5: Solve for x
    x = 63,001,138,614.72/354,992.80
  6. Step 6: Final answer
    x = 177,471.60

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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.