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Finding the Fourth Proportional to 70,898.78, 106,247.93 and 39,322.76

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Solution

The fourth proportional to 70,898.78, 106,247.93 and 39,322.76 is: 58,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,898.78 : 106,247.93 = 39,322.76 : x
  2. Step 2: Convert to fraction form
    70,898.78/106,247.93 = 39,322.76/x
  3. Step 3: Cross multiply
    70,898.78x = 106,247.93 × 39,322.76
  4. Step 4: Simplify right side
    70,898.78x = 4,177,961,124.03
  5. Step 5: Solve for x
    x = 4,177,961,124.03/70,898.78
  6. Step 6: Final answer
    x = 58,928.54

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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.