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Finding the Fourth Proportional to 352,707.20, 529,060.80 and 186,819.20

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Solution

The fourth proportional to 352,707.20, 529,060.80 and 186,819.20 is: 280,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,707.20 : 529,060.80 = 186,819.20 : x
  2. Step 2: Convert to fraction form
    352,707.20/529,060.80 = 186,819.20/x
  3. Step 3: Cross multiply
    352,707.20x = 529,060.80 × 186,819.20
  4. Step 4: Simplify right side
    352,707.20x = 98,838,715,407.36
  5. Step 5: Solve for x
    x = 98,838,715,407.36/352,707.20
  6. Step 6: Final answer
    x = 280,228.80

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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.