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Finding the Fourth Proportional to 262,062.20, 392,186.10 and 156,956.60

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Solution

The fourth proportional to 262,062.20, 392,186.10 and 156,956.60 is: 234,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,062.20 : 392,186.10 = 156,956.60 : x
  2. Step 2: Convert to fraction form
    262,062.20/392,186.10 = 156,956.60/x
  3. Step 3: Cross multiply
    262,062.20x = 392,186.10 × 156,956.60
  4. Step 4: Simplify right side
    262,062.20x = 61,556,196,823.26
  5. Step 5: Solve for x
    x = 61,556,196,823.26/262,062.20
  6. Step 6: Final answer
    x = 234,891.55

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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.