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Finding the Fourth Proportional to 418,532.40, 627,822.90 and 119,034.90

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Solution

The fourth proportional to 418,532.40, 627,822.90 and 119,034.90 is: 178,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,532.40 : 627,822.90 = 119,034.90 : x
  2. Step 2: Convert to fraction form
    418,532.40/627,822.90 = 119,034.90/x
  3. Step 3: Cross multiply
    418,532.40x = 627,822.90 × 119,034.90
  4. Step 4: Simplify right side
    418,532.40x = 74,732,836,119.21
  5. Step 5: Solve for x
    x = 74,732,836,119.21/418,532.40
  6. Step 6: Final answer
    x = 178,559.26

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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.