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Finding the Fourth Proportional to 48,663.52, 72,985.50 and 13,603.48

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Solution

The fourth proportional to 48,663.52, 72,985.50 and 13,603.48 is: 20,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,663.52 : 72,985.50 = 13,603.48 : x
  2. Step 2: Convert to fraction form
    48,663.52/72,985.50 = 13,603.48/x
  3. Step 3: Cross multiply
    48,663.52x = 72,985.50 × 13,603.48
  4. Step 4: Simplify right side
    48,663.52x = 992,856,789.54
  5. Step 5: Solve for x
    x = 992,856,789.54/48,663.52
  6. Step 6: Final answer
    x = 20,402.49

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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.