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Finding the Fourth Proportional to 543,093.19, 814,679.75 and 143,731.26

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Solution

The fourth proportional to 543,093.19, 814,679.75 and 143,731.26 is: 215,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,093.19 : 814,679.75 = 143,731.26 : x
  2. Step 2: Convert to fraction form
    543,093.19/814,679.75 = 143,731.26/x
  3. Step 3: Cross multiply
    543,093.19x = 814,679.75 × 143,731.26
  4. Step 4: Simplify right side
    543,093.19x = 117,094,947,323.31
  5. Step 5: Solve for x
    x = 117,094,947,323.31/543,093.19
  6. Step 6: Final answer
    x = 215,607.47

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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.