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Finding the Fourth Proportional to 117,813.71, 162,585.71 and 66,829.88

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Solution

The fourth proportional to 117,813.71, 162,585.71 and 66,829.88 is: 92,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,813.71 : 162,585.71 = 66,829.88 : x
  2. Step 2: Convert to fraction form
    117,813.71/162,585.71 = 66,829.88/x
  3. Step 3: Cross multiply
    117,813.71x = 162,585.71 × 66,829.88
  4. Step 4: Simplify right side
    117,813.71x = 10,865,582,341.94
  5. Step 5: Solve for x
    x = 10,865,582,341.94/117,813.71
  6. Step 6: Final answer
    x = 92,226.81

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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.