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Finding the Fourth Proportional to 48,991.52, 73,490.61 and 19,409.31

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Solution

The fourth proportional to 48,991.52, 73,490.61 and 19,409.31 is: 29,115.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,991.52 : 73,490.61 = 19,409.31 : x
  2. Step 2: Convert to fraction form
    48,991.52/73,490.61 = 19,409.31/x
  3. Step 3: Cross multiply
    48,991.52x = 73,490.61 × 19,409.31
  4. Step 4: Simplify right side
    48,991.52x = 1,426,402,031.58
  5. Step 5: Solve for x
    x = 1,426,402,031.58/48,991.52
  6. Step 6: Final answer
    x = 29,115.29

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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.