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Finding the Fourth Proportional to 64,851.66, 89,495.15 and 36,557.15

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Solution

The fourth proportional to 64,851.66, 89,495.15 and 36,557.15 is: 50,448.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,851.66 : 89,495.15 = 36,557.15 : x
  2. Step 2: Convert to fraction form
    64,851.66/89,495.15 = 36,557.15/x
  3. Step 3: Cross multiply
    64,851.66x = 89,495.15 × 36,557.15
  4. Step 4: Simplify right side
    64,851.66x = 3,271,686,992.56
  5. Step 5: Solve for x
    x = 3,271,686,992.56/64,851.66
  6. Step 6: Final answer
    x = 50,448.78

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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.