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Finding the Fourth Proportional to 111,750.68, 154,218.66 and 61,449.68

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Solution

The fourth proportional to 111,750.68, 154,218.66 and 61,449.68 is: 84,802.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.68 : 154,218.66 = 61,449.68 : x
  2. Step 2: Convert to fraction form
    111,750.68/154,218.66 = 61,449.68/x
  3. Step 3: Cross multiply
    111,750.68x = 154,218.66 × 61,449.68
  4. Step 4: Simplify right side
    111,750.68x = 9,476,687,307.03
  5. Step 5: Solve for x
    x = 9,476,687,307.03/111,750.68
  6. Step 6: Final answer
    x = 84,802.05

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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.