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Finding the Fourth Proportional to 61,471.70, 84,839.02 and 34,619.45

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Solution

The fourth proportional to 61,471.70, 84,839.02 and 34,619.45 is: 47,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,471.70 : 84,839.02 = 34,619.45 : x
  2. Step 2: Convert to fraction form
    61,471.70/84,839.02 = 34,619.45/x
  3. Step 3: Cross multiply
    61,471.70x = 84,839.02 × 34,619.45
  4. Step 4: Simplify right side
    61,471.70x = 2,937,080,336.49
  5. Step 5: Solve for x
    x = 2,937,080,336.49/61,471.70
  6. Step 6: Final answer
    x = 47,779.39

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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.