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Finding the Fourth Proportional to 97,191.91, 145,255.34 and 70,951.91

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Solution

The fourth proportional to 97,191.91, 145,255.34 and 70,951.91 is: 106,039.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,191.91 : 145,255.34 = 70,951.91 : x
  2. Step 2: Convert to fraction form
    97,191.91/145,255.34 = 70,951.91/x
  3. Step 3: Cross multiply
    97,191.91x = 145,255.34 × 70,951.91
  4. Step 4: Simplify right side
    97,191.91x = 10,306,143,810.70
  5. Step 5: Solve for x
    x = 10,306,143,810.70/97,191.91
  6. Step 6: Final answer
    x = 106,039.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.