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Finding the Fourth Proportional to 111,818, 154,308.84 and 61,515.92

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Solution

The fourth proportional to 111,818, 154,308.84 and 61,515.92 is: 84,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,818 : 154,308.84 = 61,515.92 : x
  2. Step 2: Convert to fraction form
    111,818/154,308.84 = 61,515.92/x
  3. Step 3: Cross multiply
    111,818x = 154,308.84 × 61,515.92
  4. Step 4: Simplify right side
    111,818x = 9,492,450,256.73
  5. Step 5: Solve for x
    x = 9,492,450,256.73/111,818
  6. Step 6: Final answer
    x = 84,891.97

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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.