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Finding the Fourth Proportional to 124,808.45, 186,965.01 and 58,156.79

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Solution

The fourth proportional to 124,808.45, 186,965.01 and 58,156.79 is: 87,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,808.45 : 186,965.01 = 58,156.79 : x
  2. Step 2: Convert to fraction form
    124,808.45/186,965.01 = 58,156.79/x
  3. Step 3: Cross multiply
    124,808.45x = 186,965.01 × 58,156.79
  4. Step 4: Simplify right side
    124,808.45x = 10,873,283,889.09
  5. Step 5: Solve for x
    x = 10,873,283,889.09/124,808.45
  6. Step 6: Final answer
    x = 87,119.78

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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.