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Finding the Fourth Proportional to 456,222.90, 684,269.55 and 156,717.30

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Solution

The fourth proportional to 456,222.90, 684,269.55 and 156,717.30 is: 235,053.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,222.90 : 684,269.55 = 156,717.30 : x
  2. Step 2: Convert to fraction form
    456,222.90/684,269.55 = 156,717.30/x
  3. Step 3: Cross multiply
    456,222.90x = 684,269.55 × 156,717.30
  4. Step 4: Simplify right side
    456,222.90x = 107,236,876,348.22
  5. Step 5: Solve for x
    x = 107,236,876,348.22/456,222.90
  6. Step 6: Final answer
    x = 235,053.69

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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.