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Finding the Fourth Proportional to 112,172.01, 154,794.92 and 61,871.01

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Solution

The fourth proportional to 112,172.01, 154,794.92 and 61,871.01 is: 85,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,172.01 : 154,794.92 = 61,871.01 : x
  2. Step 2: Convert to fraction form
    112,172.01/154,794.92 = 61,871.01/x
  3. Step 3: Cross multiply
    112,172.01x = 154,794.92 × 61,871.01
  4. Step 4: Simplify right side
    112,172.01x = 9,577,317,733.91
  5. Step 5: Solve for x
    x = 9,577,317,733.91/112,172.01
  6. Step 6: Final answer
    x = 85,380.64

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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.