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Finding the Fourth Proportional to 472,481.80, 708,269.10 and 156,776.20

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Solution

The fourth proportional to 472,481.80, 708,269.10 and 156,776.20 is: 235,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,481.80 : 708,269.10 = 156,776.20 : x
  2. Step 2: Convert to fraction form
    472,481.80/708,269.10 = 156,776.20/x
  3. Step 3: Cross multiply
    472,481.80x = 708,269.10 × 156,776.20
  4. Step 4: Simplify right side
    472,481.80x = 111,039,738,075.42
  5. Step 5: Solve for x
    x = 111,039,738,075.42/472,481.80
  6. Step 6: Final answer
    x = 235,013.79

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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.