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Finding the Fourth Proportional to 48,393.63, 72,603.54 and 20,298.87

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Solution

The fourth proportional to 48,393.63, 72,603.54 and 20,298.87 is: 30,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,393.63 : 72,603.54 = 20,298.87 : x
  2. Step 2: Convert to fraction form
    48,393.63/72,603.54 = 20,298.87/x
  3. Step 3: Cross multiply
    48,393.63x = 72,603.54 × 20,298.87
  4. Step 4: Simplify right side
    48,393.63x = 1,473,769,820.00
  5. Step 5: Solve for x
    x = 1,473,769,820.00/48,393.63
  6. Step 6: Final answer
    x = 30,453.80

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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.