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Finding the Fourth Proportional to 112,271.70, 168,452.10 and 45,716.70

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Solution

The fourth proportional to 112,271.70, 168,452.10 and 45,716.70 is: 68,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,271.70 : 168,452.10 = 45,716.70 : x
  2. Step 2: Convert to fraction form
    112,271.70/168,452.10 = 45,716.70/x
  3. Step 3: Cross multiply
    112,271.70x = 168,452.10 × 45,716.70
  4. Step 4: Simplify right side
    112,271.70x = 7,701,074,120.07
  5. Step 5: Solve for x
    x = 7,701,074,120.07/112,271.70
  6. Step 6: Final answer
    x = 68,593.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.