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Finding the Fourth Proportional to 73,603, 101,572.16 and 40,069

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Solution

The fourth proportional to 73,603, 101,572.16 and 40,069 is: 55,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,603 : 101,572.16 = 40,069 : x
  2. Step 2: Convert to fraction form
    73,603/101,572.16 = 40,069/x
  3. Step 3: Cross multiply
    73,603x = 101,572.16 × 40,069
  4. Step 4: Simplify right side
    73,603x = 4,069,894,879.04
  5. Step 5: Solve for x
    x = 4,069,894,879.04/73,603
  6. Step 6: Final answer
    x = 55,295.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.