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Finding the Fourth Proportional to 64,531.20, 89,057.48 and 35,854.32

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Solution

The fourth proportional to 64,531.20, 89,057.48 and 35,854.32 is: 49,481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,531.20 : 89,057.48 = 35,854.32 : x
  2. Step 2: Convert to fraction form
    64,531.20/89,057.48 = 35,854.32/x
  3. Step 3: Cross multiply
    64,531.20x = 89,057.48 × 35,854.32
  4. Step 4: Simplify right side
    64,531.20x = 3,193,095,386.31
  5. Step 5: Solve for x
    x = 3,193,095,386.31/64,531.20
  6. Step 6: Final answer
    x = 49,481.42

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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.