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Finding the Fourth Proportional to 61,971,170.80, 92,960,255.40 and 18,841,781.20

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Solution

The fourth proportional to 61,971,170.80, 92,960,255.40 and 18,841,781.20 is: 28,263,735.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971,170.80 : 92,960,255.40 = 18,841,781.20 : x
  2. Step 2: Convert to fraction form
    61,971,170.80/92,960,255.40 = 18,841,781.20/x
  3. Step 3: Cross multiply
    61,971,170.80x = 92,960,255.40 × 18,841,781.20
  4. Step 4: Simplify right side
    61,971,170.80x = 1,751,536,792,542,918.50
  5. Step 5: Solve for x
    x = 1,751,536,792,542,918.50/61,971,170.80
  6. Step 6: Final answer
    x = 28,263,735.70

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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.