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Finding the Fourth Proportional to 111,993, 154,553.58 and 61,695.24

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Solution

The fourth proportional to 111,993, 154,553.58 and 61,695.24 is: 85,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,993 : 154,553.58 = 61,695.24 : x
  2. Step 2: Convert to fraction form
    111,993/154,553.58 = 61,695.24/x
  3. Step 3: Cross multiply
    111,993x = 154,553.58 × 61,695.24
  4. Step 4: Simplify right side
    111,993x = 9,535,220,210.96
  5. Step 5: Solve for x
    x = 9,535,220,210.96/111,993
  6. Step 6: Final answer
    x = 85,141.22

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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.