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Finding the Fourth Proportional to 392,799.61, 589,237.49 and 156,089.26

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Solution

The fourth proportional to 392,799.61, 589,237.49 and 156,089.26 is: 234,149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,799.61 : 589,237.49 = 156,089.26 : x
  2. Step 2: Convert to fraction form
    392,799.61/589,237.49 = 156,089.26/x
  3. Step 3: Cross multiply
    392,799.61x = 589,237.49 × 156,089.26
  4. Step 4: Simplify right side
    392,799.61x = 91,973,643,778.36
  5. Step 5: Solve for x
    x = 91,973,643,778.36/392,799.61
  6. Step 6: Final answer
    x = 234,149.02

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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.