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Finding the Fourth Proportional to 98,889.36, 148,376.52 and 65,621.04

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Solution

The fourth proportional to 98,889.36, 148,376.52 and 65,621.04 is: 98,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,889.36 : 148,376.52 = 65,621.04 : x
  2. Step 2: Convert to fraction form
    98,889.36/148,376.52 = 65,621.04/x
  3. Step 3: Cross multiply
    98,889.36x = 148,376.52 × 65,621.04
  4. Step 4: Simplify right side
    98,889.36x = 9,736,621,553.98
  5. Step 5: Solve for x
    x = 9,736,621,553.98/98,889.36
  6. Step 6: Final answer
    x = 98,459.75

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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.