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Finding the Fourth Proportional to 111,885.16, 154,401.52 and 61,584.16

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Solution

The fourth proportional to 111,885.16, 154,401.52 and 61,584.16 is: 84,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,885.16 : 154,401.52 = 61,584.16 : x
  2. Step 2: Convert to fraction form
    111,885.16/154,401.52 = 61,584.16/x
  3. Step 3: Cross multiply
    111,885.16x = 154,401.52 × 61,584.16
  4. Step 4: Simplify right side
    111,885.16x = 9,508,687,911.92
  5. Step 5: Solve for x
    x = 9,508,687,911.92/111,885.16
  6. Step 6: Final answer
    x = 84,986.14

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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.