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Finding the Fourth Proportional to 423,909.66, 636,404.06 and 274,774.01

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Solution

The fourth proportional to 423,909.66, 636,404.06 and 274,774.01 is: 412,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,909.66 : 636,404.06 = 274,774.01 : x
  2. Step 2: Convert to fraction form
    423,909.66/636,404.06 = 274,774.01/x
  3. Step 3: Cross multiply
    423,909.66x = 636,404.06 × 274,774.01
  4. Step 4: Simplify right side
    423,909.66x = 174,867,295,763.62
  5. Step 5: Solve for x
    x = 174,867,295,763.62/423,909.66
  6. Step 6: Final answer
    x = 412,510.76

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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.