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Finding the Fourth Proportional to 83,649.15, 125,362.97 and 61,358.15

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Solution

The fourth proportional to 83,649.15, 125,362.97 and 61,358.15 is: 91,955.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,649.15 : 125,362.97 = 61,358.15 : x
  2. Step 2: Convert to fraction form
    83,649.15/125,362.97 = 61,358.15/x
  3. Step 3: Cross multiply
    83,649.15x = 125,362.97 × 61,358.15
  4. Step 4: Simplify right side
    83,649.15x = 7,692,039,924.32
  5. Step 5: Solve for x
    x = 7,692,039,924.32/83,649.15
  6. Step 6: Final answer
    x = 91,955.98

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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.