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Finding the Fourth Proportional to 117,964.16, 162,794.88 and 64,246.56

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Solution

The fourth proportional to 117,964.16, 162,794.88 and 64,246.56 is: 88,662.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,964.16 : 162,794.88 = 64,246.56 : x
  2. Step 2: Convert to fraction form
    117,964.16/162,794.88 = 64,246.56/x
  3. Step 3: Cross multiply
    117,964.16x = 162,794.88 × 64,246.56
  4. Step 4: Simplify right side
    117,964.16x = 10,459,011,025.61
  5. Step 5: Solve for x
    x = 10,459,011,025.61/117,964.16
  6. Step 6: Final answer
    x = 88,662.62

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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.