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Finding the Fourth Proportional to 117,166.50, 161,689.74 and 63,451.56

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Solution

The fourth proportional to 117,166.50, 161,689.74 and 63,451.56 is: 87,563.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,166.50 : 161,689.74 = 63,451.56 : x
  2. Step 2: Convert to fraction form
    117,166.50/161,689.74 = 63,451.56/x
  3. Step 3: Cross multiply
    117,166.50x = 161,689.74 × 63,451.56
  4. Step 4: Simplify right side
    117,166.50x = 10,259,466,238.99
  5. Step 5: Solve for x
    x = 10,259,466,238.99/117,166.50
  6. Step 6: Final answer
    x = 87,563.14

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1.5x scale

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.