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Finding the Fourth Proportional to 52,061.70, 77,983.20 and 43,313.70

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Solution

The fourth proportional to 52,061.70, 77,983.20 and 43,313.70 is: 64,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,061.70 : 77,983.20 = 43,313.70 : x
  2. Step 2: Convert to fraction form
    52,061.70/77,983.20 = 43,313.70/x
  3. Step 3: Cross multiply
    52,061.70x = 77,983.20 × 43,313.70
  4. Step 4: Simplify right side
    52,061.70x = 3,377,740,929.84
  5. Step 5: Solve for x
    x = 3,377,740,929.84/52,061.70
  6. Step 6: Final answer
    x = 64,879.57

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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.