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Finding the Fourth Proportional to 64,724.81, 89,274.23 and 43,203.71

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Solution

The fourth proportional to 64,724.81, 89,274.23 and 43,203.71 is: 59,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,724.81 : 89,274.23 = 43,203.71 : x
  2. Step 2: Convert to fraction form
    64,724.81/89,274.23 = 43,203.71/x
  3. Step 3: Cross multiply
    64,724.81x = 89,274.23 × 43,203.71
  4. Step 4: Simplify right side
    64,724.81x = 3,856,977,950.56
  5. Step 5: Solve for x
    x = 3,856,977,950.56/64,724.81
  6. Step 6: Final answer
    x = 59,590.41

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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.