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Finding the Fourth Proportional to 424,596.20, 636,900.68 and 109,046.12

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Solution

The fourth proportional to 424,596.20, 636,900.68 and 109,046.12 is: 163,570.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,596.20 : 636,900.68 = 109,046.12 : x
  2. Step 2: Convert to fraction form
    424,596.20/636,900.68 = 109,046.12/x
  3. Step 3: Cross multiply
    424,596.20x = 636,900.68 × 109,046.12
  4. Step 4: Simplify right side
    424,596.20x = 69,451,547,979.36
  5. Step 5: Solve for x
    x = 69,451,547,979.36/424,596.20
  6. Step 6: Final answer
    x = 163,570.82

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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.