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Finding the Fourth Proportional to 65,963.40, 98,945.10 and 16,715.40

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Solution

The fourth proportional to 65,963.40, 98,945.10 and 16,715.40 is: 25,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,963.40 : 98,945.10 = 16,715.40 : x
  2. Step 2: Convert to fraction form
    65,963.40/98,945.10 = 16,715.40/x
  3. Step 3: Cross multiply
    65,963.40x = 98,945.10 × 16,715.40
  4. Step 4: Simplify right side
    65,963.40x = 1,653,906,924.54
  5. Step 5: Solve for x
    x = 1,653,906,924.54/65,963.40
  6. Step 6: Final answer
    x = 25,073.10

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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.