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Finding the Fourth Proportional to 64,959.21, 89,643.96 and 35,151.21

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Solution

The fourth proportional to 64,959.21, 89,643.96 and 35,151.21 is: 48,508.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.21 : 89,643.96 = 35,151.21 : x
  2. Step 2: Convert to fraction form
    64,959.21/89,643.96 = 35,151.21/x
  3. Step 3: Cross multiply
    64,959.21x = 89,643.96 × 35,151.21
  4. Step 4: Simplify right side
    64,959.21x = 3,151,093,663.19
  5. Step 5: Solve for x
    x = 3,151,093,663.19/64,959.21
  6. Step 6: Final answer
    x = 48,508.81

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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.