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Finding the Fourth Proportional to 111,736.95, 154,196.97 and 61,435.95

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Solution

The fourth proportional to 111,736.95, 154,196.97 and 61,435.95 is: 84,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,736.95 : 154,196.97 = 61,435.95 : x
  2. Step 2: Convert to fraction form
    111,736.95/154,196.97 = 61,435.95/x
  3. Step 3: Cross multiply
    111,736.95x = 154,196.97 × 61,435.95
  4. Step 4: Simplify right side
    111,736.95x = 9,473,237,339.07
  5. Step 5: Solve for x
    x = 9,473,237,339.07/111,736.95
  6. Step 6: Final answer
    x = 84,781.60

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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.