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Finding the Fourth Proportional to 98,551.42, 147,920.51 and 60,997.88

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Solution

The fourth proportional to 98,551.42, 147,920.51 and 60,997.88 is: 91,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,551.42 : 147,920.51 = 60,997.88 : x
  2. Step 2: Convert to fraction form
    98,551.42/147,920.51 = 60,997.88/x
  3. Step 3: Cross multiply
    98,551.42x = 147,920.51 × 60,997.88
  4. Step 4: Simplify right side
    98,551.42x = 9,022,838,040.81
  5. Step 5: Solve for x
    x = 9,022,838,040.81/98,551.42
  6. Step 6: Final answer
    x = 91,554.62

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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.