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Finding the Fourth Proportional to 305,909.40, 458,911.69 and 92,626.53

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Solution

The fourth proportional to 305,909.40, 458,911.69 and 92,626.53 is: 138,954.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,909.40 : 458,911.69 = 92,626.53 : x
  2. Step 2: Convert to fraction form
    305,909.40/458,911.69 = 92,626.53/x
  3. Step 3: Cross multiply
    305,909.40x = 458,911.69 × 92,626.53
  4. Step 4: Simplify right side
    305,909.40x = 42,507,395,468.65
  5. Step 5: Solve for x
    x = 42,507,395,468.65/305,909.40
  6. Step 6: Final answer
    x = 138,954.20

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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.