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Finding the Fourth Proportional to 111,854.75, 154,354.88 and 61,550.51

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Solution

The fourth proportional to 111,854.75, 154,354.88 and 61,550.51 is: 84,937.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,854.75 : 154,354.88 = 61,550.51 : x
  2. Step 2: Convert to fraction form
    111,854.75/154,354.88 = 61,550.51/x
  3. Step 3: Cross multiply
    111,854.75x = 154,354.88 × 61,550.51
  4. Step 4: Simplify right side
    111,854.75x = 9,500,620,967.09
  5. Step 5: Solve for x
    x = 9,500,620,967.09/111,854.75
  6. Step 6: Final answer
    x = 84,937.13

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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.