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Finding the Fourth Proportional to 411,246.73, 616,632.65 and 126,860.92

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Solution

The fourth proportional to 411,246.73, 616,632.65 and 126,860.92 is: 190,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,246.73 : 616,632.65 = 126,860.92 : x
  2. Step 2: Convert to fraction form
    411,246.73/616,632.65 = 126,860.92/x
  3. Step 3: Cross multiply
    411,246.73x = 616,632.65 × 126,860.92
  4. Step 4: Simplify right side
    411,246.73x = 78,226,583,580.88
  5. Step 5: Solve for x
    x = 78,226,583,580.88/411,246.73
  6. Step 6: Final answer
    x = 190,218.13

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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.