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Finding the Fourth Proportional to 74,521.72, 111,780.96 and 35,056.96

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Solution

The fourth proportional to 74,521.72, 111,780.96 and 35,056.96 is: 52,584.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,521.72 : 111,780.96 = 35,056.96 : x
  2. Step 2: Convert to fraction form
    74,521.72/111,780.96 = 35,056.96/x
  3. Step 3: Cross multiply
    74,521.72x = 111,780.96 × 35,056.96
  4. Step 4: Simplify right side
    74,521.72x = 3,918,700,643.48
  5. Step 5: Solve for x
    x = 3,918,700,643.48/74,521.72
  6. Step 6: Final answer
    x = 52,584.68

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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.