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Finding the Fourth Proportional to 61,971.80, 92,892.72 and 30,338.24

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Solution

The fourth proportional to 61,971.80, 92,892.72 and 30,338.24 is: 45,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.80 : 92,892.72 = 30,338.24 : x
  2. Step 2: Convert to fraction form
    61,971.80/92,892.72 = 30,338.24/x
  3. Step 3: Cross multiply
    61,971.80x = 92,892.72 × 30,338.24
  4. Step 4: Simplify right side
    61,971.80x = 2,818,201,633.61
  5. Step 5: Solve for x
    x = 2,818,201,633.61/61,971.80
  6. Step 6: Final answer
    x = 45,475.55

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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.