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Finding the Fourth Proportional to 111,656.60, 154,084.38 and 61,354.52

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Solution

The fourth proportional to 111,656.60, 154,084.38 and 61,354.52 is: 84,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,656.60 : 154,084.38 = 61,354.52 : x
  2. Step 2: Convert to fraction form
    111,656.60/154,084.38 = 61,354.52/x
  3. Step 3: Cross multiply
    111,656.60x = 154,084.38 × 61,354.52
  4. Step 4: Simplify right side
    111,656.60x = 9,453,773,174.40
  5. Step 5: Solve for x
    x = 9,453,773,174.40/111,656.60
  6. Step 6: Final answer
    x = 84,668.29

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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.