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Finding the Fourth Proportional to 109,348.82, 163,424.08 and 79,828.82

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Solution

The fourth proportional to 109,348.82, 163,424.08 and 79,828.82 is: 119,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,348.82 : 163,424.08 = 79,828.82 : x
  2. Step 2: Convert to fraction form
    109,348.82/163,424.08 = 79,828.82/x
  3. Step 3: Cross multiply
    109,348.82x = 163,424.08 × 79,828.82
  4. Step 4: Simplify right side
    109,348.82x = 13,045,951,465.99
  5. Step 5: Solve for x
    x = 13,045,951,465.99/109,348.82
  6. Step 6: Final answer
    x = 119,305.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.