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Finding the Fourth Proportional to 543,025.62, 814,577.40 and 143,661.67

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Solution

The fourth proportional to 543,025.62, 814,577.40 and 143,661.67 is: 215,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,025.62 : 814,577.40 = 143,661.67 : x
  2. Step 2: Convert to fraction form
    543,025.62/814,577.40 = 143,661.67/x
  3. Step 3: Cross multiply
    543,025.62x = 814,577.40 × 143,661.67
  4. Step 4: Simplify right side
    543,025.62x = 117,023,547,591.82
  5. Step 5: Solve for x
    x = 117,023,547,591.82/543,025.62
  6. Step 6: Final answer
    x = 215,502.81

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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.