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Finding the Fourth Proportional to 56,364.21, 77,715.54 and 36,221.94

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Solution

The fourth proportional to 56,364.21, 77,715.54 and 36,221.94 is: 49,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,364.21 : 77,715.54 = 36,221.94 : x
  2. Step 2: Convert to fraction form
    56,364.21/77,715.54 = 36,221.94/x
  3. Step 3: Cross multiply
    56,364.21x = 77,715.54 × 36,221.94
  4. Step 4: Simplify right side
    56,364.21x = 2,815,007,626.95
  5. Step 5: Solve for x
    x = 2,815,007,626.95/56,364.21
  6. Step 6: Final answer
    x = 49,943.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.