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Finding the Fourth Proportional to 73,187.77, 100,987.64 and 42,567.64

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Solution

The fourth proportional to 73,187.77, 100,987.64 and 42,567.64 is: 58,736.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,187.77 : 100,987.64 = 42,567.64 : x
  2. Step 2: Convert to fraction form
    73,187.77/100,987.64 = 42,567.64/x
  3. Step 3: Cross multiply
    73,187.77x = 100,987.64 × 42,567.64
  4. Step 4: Simplify right side
    73,187.77x = 4,298,804,786.19
  5. Step 5: Solve for x
    x = 4,298,804,786.19/73,187.77
  6. Step 6: Final answer
    x = 58,736.66

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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.