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Finding the Fourth Proportional to 111,957.54, 154,494.41 and 61,656.54

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Solution

The fourth proportional to 111,957.54, 154,494.41 and 61,656.54 is: 85,082.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,957.54 : 154,494.41 = 61,656.54 : x
  2. Step 2: Convert to fraction form
    111,957.54/154,494.41 = 61,656.54/x
  3. Step 3: Cross multiply
    111,957.54x = 154,494.41 × 61,656.54
  4. Step 4: Simplify right side
    111,957.54x = 9,525,590,461.66
  5. Step 5: Solve for x
    x = 9,525,590,461.66/111,957.54
  6. Step 6: Final answer
    x = 85,082.17

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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.