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Finding the Fourth Proportional to 149,243.54, 205,957.50 and 85,569.03

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Solution

The fourth proportional to 149,243.54, 205,957.50 and 85,569.03 is: 118,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,243.54 : 205,957.50 = 85,569.03 : x
  2. Step 2: Convert to fraction form
    149,243.54/205,957.50 = 85,569.03/x
  3. Step 3: Cross multiply
    149,243.54x = 205,957.50 × 85,569.03
  4. Step 4: Simplify right side
    149,243.54x = 17,623,583,874.93
  5. Step 5: Solve for x
    x = 17,623,583,874.93/149,243.54
  6. Step 6: Final answer
    x = 118,086.08

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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.