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Finding the Fourth Proportional to 98,760.66, 148,155.56 and 28,630.86

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Solution

The fourth proportional to 98,760.66, 148,155.56 and 28,630.86 is: 42,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,760.66 : 148,155.56 = 28,630.86 : x
  2. Step 2: Convert to fraction form
    98,760.66/148,155.56 = 28,630.86/x
  3. Step 3: Cross multiply
    98,760.66x = 148,155.56 × 28,630.86
  4. Step 4: Simplify right side
    98,760.66x = 4,241,821,096.58
  5. Step 5: Solve for x
    x = 4,241,821,096.58/98,760.66
  6. Step 6: Final answer
    x = 42,950.51

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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.