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Finding the Fourth Proportional to 98,855.76, 148,305.42 and 28,740.54

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Solution

The fourth proportional to 98,855.76, 148,305.42 and 28,740.54 is: 43,117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,855.76 : 148,305.42 = 28,740.54 : x
  2. Step 2: Convert to fraction form
    98,855.76/148,305.42 = 28,740.54/x
  3. Step 3: Cross multiply
    98,855.76x = 148,305.42 × 28,740.54
  4. Step 4: Simplify right side
    98,855.76x = 4,262,377,855.73
  5. Step 5: Solve for x
    x = 4,262,377,855.73/98,855.76
  6. Step 6: Final answer
    x = 43,117.14

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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.