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Finding the Fourth Proportional to 48,251.80, 72,353.40 and 28,536.40

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Solution

The fourth proportional to 48,251.80, 72,353.40 and 28,536.40 is: 42,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,251.80 : 72,353.40 = 28,536.40 : x
  2. Step 2: Convert to fraction form
    48,251.80/72,353.40 = 28,536.40/x
  3. Step 3: Cross multiply
    48,251.80x = 72,353.40 × 28,536.40
  4. Step 4: Simplify right side
    48,251.80x = 2,064,705,563.76
  5. Step 5: Solve for x
    x = 2,064,705,563.76/48,251.80
  6. Step 6: Final answer
    x = 42,790.23

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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.