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Finding the Fourth Proportional to 193,144.70, 290,045.10 and 143,281.10

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Solution

The fourth proportional to 193,144.70, 290,045.10 and 143,281.10 is: 215,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,144.70 : 290,045.10 = 143,281.10 : x
  2. Step 2: Convert to fraction form
    193,144.70/290,045.10 = 143,281.10/x
  3. Step 3: Cross multiply
    193,144.70x = 290,045.10 × 143,281.10
  4. Step 4: Simplify right side
    193,144.70x = 41,557,980,977.61
  5. Step 5: Solve for x
    x = 41,557,980,977.61/193,144.70
  6. Step 6: Final answer
    x = 215,165.01

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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.