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Finding the Fourth Proportional to 61,015.58, 84,200.61 and 34,158.11

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Solution

The fourth proportional to 61,015.58, 84,200.61 and 34,158.11 is: 47,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,015.58 : 84,200.61 = 34,158.11 : x
  2. Step 2: Convert to fraction form
    61,015.58/84,200.61 = 34,158.11/x
  3. Step 3: Cross multiply
    61,015.58x = 84,200.61 × 34,158.11
  4. Step 4: Simplify right side
    61,015.58x = 2,876,133,405.54
  5. Step 5: Solve for x
    x = 2,876,133,405.54/61,015.58
  6. Step 6: Final answer
    x = 47,137.69

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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.