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Finding the Fourth Proportional to 262,036.70, 392,147.85 and 156,931.10

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Solution

The fourth proportional to 262,036.70, 392,147.85 and 156,931.10 is: 234,853.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,036.70 : 392,147.85 = 156,931.10 : x
  2. Step 2: Convert to fraction form
    262,036.70/392,147.85 = 156,931.10/x
  3. Step 3: Cross multiply
    262,036.70x = 392,147.85 × 156,931.10
  4. Step 4: Simplify right side
    262,036.70x = 61,540,193,463.14
  5. Step 5: Solve for x
    x = 61,540,193,463.14/262,036.70
  6. Step 6: Final answer
    x = 234,853.34

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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.