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Finding the Fourth Proportional to 64,860.78, 89,508.41 and 36,179.49

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Solution

The fourth proportional to 64,860.78, 89,508.41 and 36,179.49 is: 49,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,860.78 : 89,508.41 = 36,179.49 : x
  2. Step 2: Convert to fraction form
    64,860.78/89,508.41 = 36,179.49/x
  3. Step 3: Cross multiply
    64,860.78x = 89,508.41 × 36,179.49
  4. Step 4: Simplify right side
    64,860.78x = 3,238,368,914.94
  5. Step 5: Solve for x
    x = 3,238,368,914.94/64,860.78
  6. Step 6: Final answer
    x = 49,928.00

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1.5x scale

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.