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Finding the Fourth Proportional to 64,206.82, 88,629.78 and 57,479.98

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Solution

The fourth proportional to 64,206.82, 88,629.78 and 57,479.98 is: 79,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,206.82 : 88,629.78 = 57,479.98 : x
  2. Step 2: Convert to fraction form
    64,206.82/88,629.78 = 57,479.98/x
  3. Step 3: Cross multiply
    64,206.82x = 88,629.78 × 57,479.98
  4. Step 4: Simplify right side
    64,206.82x = 5,094,437,981.80
  5. Step 5: Solve for x
    x = 5,094,437,981.80/64,206.82
  6. Step 6: Final answer
    x = 79,344.19

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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.