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Finding the Fourth Proportional to 64,798.13, 89,410.60 and 36,111.53

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Solution

The fourth proportional to 64,798.13, 89,410.60 and 36,111.53 is: 49,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,798.13 : 89,410.60 = 36,111.53 : x
  2. Step 2: Convert to fraction form
    64,798.13/89,410.60 = 36,111.53/x
  3. Step 3: Cross multiply
    64,798.13x = 89,410.60 × 36,111.53
  4. Step 4: Simplify right side
    64,798.13x = 3,228,753,240.47
  5. Step 5: Solve for x
    x = 3,228,753,240.47/64,798.13
  6. Step 6: Final answer
    x = 49,827.87

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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.