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Finding the Fourth Proportional to 294,279.10, 441,418.65 and 72,663.10

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Solution

The fourth proportional to 294,279.10, 441,418.65 and 72,663.10 is: 108,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,279.10 : 441,418.65 = 72,663.10 : x
  2. Step 2: Convert to fraction form
    294,279.10/441,418.65 = 72,663.10/x
  3. Step 3: Cross multiply
    294,279.10x = 441,418.65 × 72,663.10
  4. Step 4: Simplify right side
    294,279.10x = 32,074,847,506.82
  5. Step 5: Solve for x
    x = 32,074,847,506.82/294,279.10
  6. Step 6: Final answer
    x = 108,994.65

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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.