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Finding the Fourth Proportional to 64,579.68, 89,103.24 and 37,718.46

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Solution

The fourth proportional to 64,579.68, 89,103.24 and 37,718.46 is: 52,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,579.68 : 89,103.24 = 37,718.46 : x
  2. Step 2: Convert to fraction form
    64,579.68/89,103.24 = 37,718.46/x
  3. Step 3: Cross multiply
    64,579.68x = 89,103.24 × 37,718.46
  4. Step 4: Simplify right side
    64,579.68x = 3,360,836,993.81
  5. Step 5: Solve for x
    x = 3,360,836,993.81/64,579.68
  6. Step 6: Final answer
    x = 52,041.71

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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.