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Finding the Fourth Proportional to 57,212.93, 78,956.54 and 35,715.41

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Solution

The fourth proportional to 57,212.93, 78,956.54 and 35,715.41 is: 49,288.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,212.93 : 78,956.54 = 35,715.41 : x
  2. Step 2: Convert to fraction form
    57,212.93/78,956.54 = 35,715.41/x
  3. Step 3: Cross multiply
    57,212.93x = 78,956.54 × 35,715.41
  4. Step 4: Simplify right side
    57,212.93x = 2,819,965,054.94
  5. Step 5: Solve for x
    x = 2,819,965,054.94/57,212.93
  6. Step 6: Final answer
    x = 49,288.94

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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.