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Finding the Fourth Proportional to 111,677, 154,114.26 and 61,376

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Solution

The fourth proportional to 111,677, 154,114.26 and 61,376 is: 84,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,677 : 154,114.26 = 61,376 : x
  2. Step 2: Convert to fraction form
    111,677/154,114.26 = 61,376/x
  3. Step 3: Cross multiply
    111,677x = 154,114.26 × 61,376
  4. Step 4: Simplify right side
    111,677x = 9,458,916,821.76
  5. Step 5: Solve for x
    x = 9,458,916,821.76/111,677
  6. Step 6: Final answer
    x = 84,698.88

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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.