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Finding the Fourth Proportional to 98,866.98, 148,234.86 and 69,320.61

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Solution

The fourth proportional to 98,866.98, 148,234.86 and 69,320.61 is: 103,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,866.98 : 148,234.86 = 69,320.61 : x
  2. Step 2: Convert to fraction form
    98,866.98/148,234.86 = 69,320.61/x
  3. Step 3: Cross multiply
    98,866.98x = 148,234.86 × 69,320.61
  4. Step 4: Simplify right side
    98,866.98x = 10,275,730,918.46
  5. Step 5: Solve for x
    x = 10,275,730,918.46/98,866.98
  6. Step 6: Final answer
    x = 103,934.91

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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.