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Finding the Fourth Proportional to 64,943.54, 89,642.51 and 38,096.90

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Solution

The fourth proportional to 64,943.54, 89,642.51 and 38,096.90 is: 52,585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,943.54 : 89,642.51 = 38,096.90 : x
  2. Step 2: Convert to fraction form
    64,943.54/89,642.51 = 38,096.90/x
  3. Step 3: Cross multiply
    64,943.54x = 89,642.51 × 38,096.90
  4. Step 4: Simplify right side
    64,943.54x = 3,415,101,548.73
  5. Step 5: Solve for x
    x = 3,415,101,548.73/64,943.54
  6. Step 6: Final answer
    x = 52,585.70

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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.