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Finding the Fourth Proportional to 48,796.40, 73,202.70 and 19,215.20

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Solution

The fourth proportional to 48,796.40, 73,202.70 and 19,215.20 is: 28,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,796.40 : 73,202.70 = 19,215.20 : x
  2. Step 2: Convert to fraction form
    48,796.40/73,202.70 = 19,215.20/x
  3. Step 3: Cross multiply
    48,796.40x = 73,202.70 × 19,215.20
  4. Step 4: Simplify right side
    48,796.40x = 1,406,604,521.04
  5. Step 5: Solve for x
    x = 1,406,604,521.04/48,796.40
  6. Step 6: Final answer
    x = 28,825.99

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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.