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Finding the Fourth Proportional to 65,975.40, 98,963.10 and 58,717.80

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Solution

The fourth proportional to 65,975.40, 98,963.10 and 58,717.80 is: 88,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,975.40 : 98,963.10 = 58,717.80 : x
  2. Step 2: Convert to fraction form
    65,975.40/98,963.10 = 58,717.80/x
  3. Step 3: Cross multiply
    65,975.40x = 98,963.10 × 58,717.80
  4. Step 4: Simplify right side
    65,975.40x = 5,810,895,513.18
  5. Step 5: Solve for x
    x = 5,810,895,513.18/65,975.40
  6. Step 6: Final answer
    x = 88,076.70

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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.