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Finding the Fourth Proportional to 64,879.64, 97,335.84 and 18,132.51

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Solution

The fourth proportional to 64,879.64, 97,335.84 and 18,132.51 is: 27,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.64 : 97,335.84 = 18,132.51 : x
  2. Step 2: Convert to fraction form
    64,879.64/97,335.84 = 18,132.51/x
  3. Step 3: Cross multiply
    64,879.64x = 97,335.84 × 18,132.51
  4. Step 4: Simplify right side
    64,879.64x = 1,764,943,092.16
  5. Step 5: Solve for x
    x = 1,764,943,092.16/64,879.64
  6. Step 6: Final answer
    x = 27,203.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.