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Finding the Fourth Proportional to 98,620.87, 147,887.56 and 61,179.43

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Solution

The fourth proportional to 98,620.87, 147,887.56 and 61,179.43 is: 91,742.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,620.87 : 147,887.56 = 61,179.43 : x
  2. Step 2: Convert to fraction form
    98,620.87/147,887.56 = 61,179.43/x
  3. Step 3: Cross multiply
    98,620.87x = 147,887.56 × 61,179.43
  4. Step 4: Simplify right side
    98,620.87x = 9,047,676,624.89
  5. Step 5: Solve for x
    x = 9,047,676,624.89/98,620.87
  6. Step 6: Final answer
    x = 91,742.01

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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.