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Finding the Fourth Proportional to 61,338.76, 84,643.29 and 34,485.43

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Solution

The fourth proportional to 61,338.76, 84,643.29 and 34,485.43 is: 47,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,338.76 : 84,643.29 = 34,485.43 : x
  2. Step 2: Convert to fraction form
    61,338.76/84,643.29 = 34,485.43/x
  3. Step 3: Cross multiply
    61,338.76x = 84,643.29 × 34,485.43
  4. Step 4: Simplify right side
    61,338.76x = 2,918,960,252.26
  5. Step 5: Solve for x
    x = 2,918,960,252.26/61,338.76
  6. Step 6: Final answer
    x = 47,587.53

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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.