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Finding the Fourth Proportional to 64,987.63, 89,682.95 and 36,695.14

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Solution

The fourth proportional to 64,987.63, 89,682.95 and 36,695.14 is: 50,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.63 : 89,682.95 = 36,695.14 : x
  2. Step 2: Convert to fraction form
    64,987.63/89,682.95 = 36,695.14/x
  3. Step 3: Cross multiply
    64,987.63x = 89,682.95 × 36,695.14
  4. Step 4: Simplify right side
    64,987.63x = 3,290,928,405.86
  5. Step 5: Solve for x
    x = 3,290,928,405.86/64,987.63
  6. Step 6: Final answer
    x = 50,639.30

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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.