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Finding the Fourth Proportional to 64,991.97, 89,684.63 and 37,765.64

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Solution

The fourth proportional to 64,991.97, 89,684.63 and 37,765.64 is: 52,114.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,991.97 : 89,684.63 = 37,765.64 : x
  2. Step 2: Convert to fraction form
    64,991.97/89,684.63 = 37,765.64/x
  3. Step 3: Cross multiply
    64,991.97x = 89,684.63 × 37,765.64
  4. Step 4: Simplify right side
    64,991.97x = 3,386,996,812.86
  5. Step 5: Solve for x
    x = 3,386,996,812.86/64,991.97
  6. Step 6: Final answer
    x = 52,114.08

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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.