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Finding the Fourth Proportional to 35,820.60, 53,711.70 and 15,020.60

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Solution

The fourth proportional to 35,820.60, 53,711.70 and 15,020.60 is: 22,522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,820.60 : 53,711.70 = 15,020.60 : x
  2. Step 2: Convert to fraction form
    35,820.60/53,711.70 = 15,020.60/x
  3. Step 3: Cross multiply
    35,820.60x = 53,711.70 × 15,020.60
  4. Step 4: Simplify right side
    35,820.60x = 806,781,961.02
  5. Step 5: Solve for x
    x = 806,781,961.02/35,820.60
  6. Step 6: Final answer
    x = 22,522.85

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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.