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Finding the Fourth Proportional to 48,872.40, 73,316.70 and 19,291.20

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Solution

The fourth proportional to 48,872.40, 73,316.70 and 19,291.20 is: 28,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,872.40 : 73,316.70 = 19,291.20 : x
  2. Step 2: Convert to fraction form
    48,872.40/73,316.70 = 19,291.20/x
  3. Step 3: Cross multiply
    48,872.40x = 73,316.70 × 19,291.20
  4. Step 4: Simplify right side
    48,872.40x = 1,414,367,123.04
  5. Step 5: Solve for x
    x = 1,414,367,123.04/48,872.40
  6. Step 6: Final answer
    x = 28,940.00

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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.