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Finding the Fourth Proportional to 111,653.60, 154,080.22 and 61,351.52

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Solution

The fourth proportional to 111,653.60, 154,080.22 and 61,351.52 is: 84,664.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,653.60 : 154,080.22 = 61,351.52 : x
  2. Step 2: Convert to fraction form
    111,653.60/154,080.22 = 61,351.52/x
  3. Step 3: Cross multiply
    111,653.60x = 154,080.22 × 61,351.52
  4. Step 4: Simplify right side
    111,653.60x = 9,453,055,698.93
  5. Step 5: Solve for x
    x = 9,453,055,698.93/111,653.60
  6. Step 6: Final answer
    x = 84,664.14

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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.