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Finding the Fourth Proportional to 103,774.80, 155,681.40 and 33,656.40

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Solution

The fourth proportional to 103,774.80, 155,681.40 and 33,656.40 is: 50,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,774.80 : 155,681.40 = 33,656.40 : x
  2. Step 2: Convert to fraction form
    103,774.80/155,681.40 = 33,656.40/x
  3. Step 3: Cross multiply
    103,774.80x = 155,681.40 × 33,656.40
  4. Step 4: Simplify right side
    103,774.80x = 5,239,675,470.96
  5. Step 5: Solve for x
    x = 5,239,675,470.96/103,774.80
  6. Step 6: Final answer
    x = 50,490.83

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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.