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Finding the Fourth Proportional to 70,975.86, 97,951.17 and 39,144.82

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Solution

The fourth proportional to 70,975.86, 97,951.17 and 39,144.82 is: 54,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,975.86 : 97,951.17 = 39,144.82 : x
  2. Step 2: Convert to fraction form
    70,975.86/97,951.17 = 39,144.82/x
  3. Step 3: Cross multiply
    70,975.86x = 97,951.17 × 39,144.82
  4. Step 4: Simplify right side
    70,975.86x = 3,834,280,918.44
  5. Step 5: Solve for x
    x = 3,834,280,918.44/70,975.86
  6. Step 6: Final answer
    x = 54,022.32

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1.5x scale

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.