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Finding the Fourth Proportional to 603,279.80, 905,041.20 and 176,814.80

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Solution

The fourth proportional to 603,279.80, 905,041.20 and 176,814.80 is: 265,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,279.80 : 905,041.20 = 176,814.80 : x
  2. Step 2: Convert to fraction form
    603,279.80/905,041.20 = 176,814.80/x
  3. Step 3: Cross multiply
    603,279.80x = 905,041.20 × 176,814.80
  4. Step 4: Simplify right side
    603,279.80x = 160,024,678,769.76
  5. Step 5: Solve for x
    x = 160,024,678,769.76/603,279.80
  6. Step 6: Final answer
    x = 265,257.81

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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.