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Finding the Fourth Proportional to 117,198.72, 161,734.68 and 63,483.84

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Solution

The fourth proportional to 117,198.72, 161,734.68 and 63,483.84 is: 87,607.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,198.72 : 161,734.68 = 63,483.84 : x
  2. Step 2: Convert to fraction form
    117,198.72/161,734.68 = 63,483.84/x
  3. Step 3: Cross multiply
    117,198.72x = 161,734.68 × 63,483.84
  4. Step 4: Simplify right side
    117,198.72x = 10,267,538,547.57
  5. Step 5: Solve for x
    x = 10,267,538,547.57/117,198.72
  6. Step 6: Final answer
    x = 87,607.94

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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.