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Finding the Fourth Proportional to 188,603.92, 260,268.22 and 103,720.98

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Solution

The fourth proportional to 188,603.92, 260,268.22 and 103,720.98 is: 143,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,603.92 : 260,268.22 = 103,720.98 : x
  2. Step 2: Convert to fraction form
    188,603.92/260,268.22 = 103,720.98/x
  3. Step 3: Cross multiply
    188,603.92x = 260,268.22 × 103,720.98
  4. Step 4: Simplify right side
    188,603.92x = 26,995,274,841.26
  5. Step 5: Solve for x
    x = 26,995,274,841.26/188,603.92
  6. Step 6: Final answer
    x = 143,132.10

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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.