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Finding the Fourth Proportional to 325,661.20, 488,929.20 and 207,854.80

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Solution

The fourth proportional to 325,661.20, 488,929.20 and 207,854.80 is: 312,061.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,661.20 : 488,929.20 = 207,854.80 : x
  2. Step 2: Convert to fraction form
    325,661.20/488,929.20 = 207,854.80/x
  3. Step 3: Cross multiply
    325,661.20x = 488,929.20 × 207,854.80
  4. Step 4: Simplify right side
    325,661.20x = 101,626,281,080.16
  5. Step 5: Solve for x
    x = 101,626,281,080.16/325,661.20
  6. Step 6: Final answer
    x = 312,061.37

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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.