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Finding the Fourth Proportional to 101,556.94, 152,355.91 and 69,982.13

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Solution

The fourth proportional to 101,556.94, 152,355.91 and 69,982.13 is: 104,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,556.94 : 152,355.91 = 69,982.13 : x
  2. Step 2: Convert to fraction form
    101,556.94/152,355.91 = 69,982.13/x
  3. Step 3: Cross multiply
    101,556.94x = 152,355.91 × 69,982.13
  4. Step 4: Simplify right side
    101,556.94x = 10,662,190,776.86
  5. Step 5: Solve for x
    x = 10,662,190,776.86/101,556.94
  6. Step 6: Final answer
    x = 104,987.32

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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.