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Finding the Fourth Proportional to 239,320.80, 358,851.60 and 98,920.80

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Solution

The fourth proportional to 239,320.80, 358,851.60 and 98,920.80 is: 148,327.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,320.80 : 358,851.60 = 98,920.80 : x
  2. Step 2: Convert to fraction form
    239,320.80/358,851.60 = 98,920.80/x
  3. Step 3: Cross multiply
    239,320.80x = 358,851.60 × 98,920.80
  4. Step 4: Simplify right side
    239,320.80x = 35,497,887,353.28
  5. Step 5: Solve for x
    x = 35,497,887,353.28/239,320.80
  6. Step 6: Final answer
    x = 148,327.63

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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.