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Finding the Fourth Proportional to 110,544.40, 165,881.40 and 40,430.80

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Solution

The fourth proportional to 110,544.40, 165,881.40 and 40,430.80 is: 60,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,544.40 : 165,881.40 = 40,430.80 : x
  2. Step 2: Convert to fraction form
    110,544.40/165,881.40 = 40,430.80/x
  3. Step 3: Cross multiply
    110,544.40x = 165,881.40 × 40,430.80
  4. Step 4: Simplify right side
    110,544.40x = 6,706,717,707.12
  5. Step 5: Solve for x
    x = 6,706,717,707.12/110,544.40
  6. Step 6: Final answer
    x = 60,669.90

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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.