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Finding the Fourth Proportional to 103,435.11, 155,177.66 and 35,957.40

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Solution

The fourth proportional to 103,435.11, 155,177.66 and 35,957.40 is: 53,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,435.11 : 155,177.66 = 35,957.40 : x
  2. Step 2: Convert to fraction form
    103,435.11/155,177.66 = 35,957.40/x
  3. Step 3: Cross multiply
    103,435.11x = 155,177.66 × 35,957.40
  4. Step 4: Simplify right side
    103,435.11x = 5,579,784,236.01
  5. Step 5: Solve for x
    x = 5,579,784,236.01/103,435.11
  6. Step 6: Final answer
    x = 53,944.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.