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Finding the Fourth Proportional to 456,120.70, 684,326.85 and 156,793.30

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Solution

The fourth proportional to 456,120.70, 684,326.85 and 156,793.30 is: 235,240.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,120.70 : 684,326.85 = 156,793.30 : x
  2. Step 2: Convert to fraction form
    456,120.70/684,326.85 = 156,793.30/x
  3. Step 3: Cross multiply
    456,120.70x = 684,326.85 × 156,793.30
  4. Step 4: Simplify right side
    456,120.70x = 107,297,865,090.11
  5. Step 5: Solve for x
    x = 107,297,865,090.11/456,120.70
  6. Step 6: Final answer
    x = 235,240.07

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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.