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Finding the Fourth Proportional to 392,725.66, 589,076.72 and 108,433.59

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Solution

The fourth proportional to 392,725.66, 589,076.72 and 108,433.59 is: 162,647.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,725.66 : 589,076.72 = 108,433.59 : x
  2. Step 2: Convert to fraction form
    392,725.66/589,076.72 = 108,433.59/x
  3. Step 3: Cross multiply
    392,725.66x = 589,076.72 × 108,433.59
  4. Step 4: Simplify right side
    392,725.66x = 63,875,703,535.02
  5. Step 5: Solve for x
    x = 63,875,703,535.02/392,725.66
  6. Step 6: Final answer
    x = 162,647.14

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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.