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Finding the Fourth Proportional to 48,199.74, 72,285.03 and 28,473

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Solution

The fourth proportional to 48,199.74, 72,285.03 and 28,473 is: 42,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,199.74 : 72,285.03 = 28,473 : x
  2. Step 2: Convert to fraction form
    48,199.74/72,285.03 = 28,473/x
  3. Step 3: Cross multiply
    48,199.74x = 72,285.03 × 28,473
  4. Step 4: Simplify right side
    48,199.74x = 2,058,171,659.19
  5. Step 5: Solve for x
    x = 2,058,171,659.19/48,199.74
  6. Step 6: Final answer
    x = 42,700.89

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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.