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Finding the Fourth Proportional to 62,670, 86,484.60 and 34,375.76

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Solution

The fourth proportional to 62,670, 86,484.60 and 34,375.76 is: 47,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,670 : 86,484.60 = 34,375.76 : x
  2. Step 2: Convert to fraction form
    62,670/86,484.60 = 34,375.76/x
  3. Step 3: Cross multiply
    62,670x = 86,484.60 × 34,375.76
  4. Step 4: Simplify right side
    62,670x = 2,972,973,420.87
  5. Step 5: Solve for x
    x = 2,972,973,420.87/62,670
  6. Step 6: Final answer
    x = 47,438.54

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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.