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Finding the Fourth Proportional to 174,987.40, 262,610.70 and 69,881.80

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Solution

The fourth proportional to 174,987.40, 262,610.70 and 69,881.80 is: 104,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,987.40 : 262,610.70 = 69,881.80 : x
  2. Step 2: Convert to fraction form
    174,987.40/262,610.70 = 69,881.80/x
  3. Step 3: Cross multiply
    174,987.40x = 262,610.70 × 69,881.80
  4. Step 4: Simplify right side
    174,987.40x = 18,351,708,415.26
  5. Step 5: Solve for x
    x = 18,351,708,415.26/174,987.40
  6. Step 6: Final answer
    x = 104,874.46

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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.