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Finding the Fourth Proportional to 124,612.64, 186,727.53 and 84,579.56

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Solution

The fourth proportional to 124,612.64, 186,727.53 and 84,579.56 is: 126,739.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,612.64 : 186,727.53 = 84,579.56 : x
  2. Step 2: Convert to fraction form
    124,612.64/186,727.53 = 84,579.56/x
  3. Step 3: Cross multiply
    124,612.64x = 186,727.53 × 84,579.56
  4. Step 4: Simplify right side
    124,612.64x = 15,793,332,327.29
  5. Step 5: Solve for x
    x = 15,793,332,327.29/124,612.64
  6. Step 6: Final answer
    x = 126,739.41

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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.