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Finding the Fourth Proportional to 61,486.96, 84,859.74 and 34,634.56

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Solution

The fourth proportional to 61,486.96, 84,859.74 and 34,634.56 is: 47,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.96 : 84,859.74 = 34,634.56 : x
  2. Step 2: Convert to fraction form
    61,486.96/84,859.74 = 34,634.56/x
  3. Step 3: Cross multiply
    61,486.96x = 84,859.74 × 34,634.56
  4. Step 4: Simplify right side
    61,486.96x = 2,939,079,756.61
  5. Step 5: Solve for x
    x = 2,939,079,756.61/61,486.96
  6. Step 6: Final answer
    x = 47,800.05

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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.