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Finding the Fourth Proportional to 98,759.66, 148,154.06 and 28,629.86

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Solution

The fourth proportional to 98,759.66, 148,154.06 and 28,629.86 is: 42,949.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,759.66 : 148,154.06 = 28,629.86 : x
  2. Step 2: Convert to fraction form
    98,759.66/148,154.06 = 28,629.86/x
  3. Step 3: Cross multiply
    98,759.66x = 148,154.06 × 28,629.86
  4. Step 4: Simplify right side
    98,759.66x = 4,241,629,327.04
  5. Step 5: Solve for x
    x = 4,241,629,327.04/98,759.66
  6. Step 6: Final answer
    x = 42,949.01

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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.