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Finding the Fourth Proportional to 108,643.49, 149,928.35 and 60,248.82

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Solution

The fourth proportional to 108,643.49, 149,928.35 and 60,248.82 is: 83,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,643.49 : 149,928.35 = 60,248.82 : x
  2. Step 2: Convert to fraction form
    108,643.49/149,928.35 = 60,248.82/x
  3. Step 3: Cross multiply
    108,643.49x = 149,928.35 × 60,248.82
  4. Step 4: Simplify right side
    108,643.49x = 9,033,006,172.05
  5. Step 5: Solve for x
    x = 9,033,006,172.05/108,643.49
  6. Step 6: Final answer
    x = 83,143.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.