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Finding the Fourth Proportional to 111,156.89, 153,396.51 and 60,855.89

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Solution

The fourth proportional to 111,156.89, 153,396.51 and 60,855.89 is: 83,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,156.89 : 153,396.51 = 60,855.89 : x
  2. Step 2: Convert to fraction form
    111,156.89/153,396.51 = 60,855.89/x
  3. Step 3: Cross multiply
    111,156.89x = 153,396.51 × 60,855.89
  4. Step 4: Simplify right side
    111,156.89x = 9,335,081,138.94
  5. Step 5: Solve for x
    x = 9,335,081,138.94/111,156.89
  6. Step 6: Final answer
    x = 83,981.13

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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.