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Finding the Fourth Proportional to 70,608.92, 97,421.70 and 41,921

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Solution

The fourth proportional to 70,608.92, 97,421.70 and 41,921 is: 57,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,608.92 : 97,421.70 = 41,921 : x
  2. Step 2: Convert to fraction form
    70,608.92/97,421.70 = 41,921/x
  3. Step 3: Cross multiply
    70,608.92x = 97,421.70 × 41,921
  4. Step 4: Simplify right side
    70,608.92x = 4,084,015,085.70
  5. Step 5: Solve for x
    x = 4,084,015,085.70/70,608.92
  6. Step 6: Final answer
    x = 57,839.93

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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.