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Finding the Fourth Proportional to 111,804.42, 154,292.49 and 61,503.42

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Solution

The fourth proportional to 111,804.42, 154,292.49 and 61,503.42 is: 84,876.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,804.42 : 154,292.49 = 61,503.42 : x
  2. Step 2: Convert to fraction form
    111,804.42/154,292.49 = 61,503.42/x
  3. Step 3: Cross multiply
    111,804.42x = 154,292.49 × 61,503.42
  4. Step 4: Simplify right side
    111,804.42x = 9,489,515,815.32
  5. Step 5: Solve for x
    x = 9,489,515,815.32/111,804.42
  6. Step 6: Final answer
    x = 84,876.03

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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.