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Finding the Fourth Proportional to 543,189.11, 814,814.78 and 143,819.51

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Solution

The fourth proportional to 543,189.11, 814,814.78 and 143,819.51 is: 215,737.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,189.11 : 814,814.78 = 143,819.51 : x
  2. Step 2: Convert to fraction form
    543,189.11/814,814.78 = 143,819.51/x
  3. Step 3: Cross multiply
    543,189.11x = 814,814.78 × 143,819.51
  4. Step 4: Simplify right side
    543,189.11x = 117,186,257,607.19
  5. Step 5: Solve for x
    x = 117,186,257,607.19/543,189.11
  6. Step 6: Final answer
    x = 215,737.50

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1.5x scale

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.