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Finding the Fourth Proportional to 103,997.60, 155,996.40 and 41,712.80

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Solution

The fourth proportional to 103,997.60, 155,996.40 and 41,712.80 is: 62,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,997.60 : 155,996.40 = 41,712.80 : x
  2. Step 2: Convert to fraction form
    103,997.60/155,996.40 = 41,712.80/x
  3. Step 3: Cross multiply
    103,997.60x = 155,996.40 × 41,712.80
  4. Step 4: Simplify right side
    103,997.60x = 6,507,046,633.92
  5. Step 5: Solve for x
    x = 6,507,046,633.92/103,997.60
  6. Step 6: Final answer
    x = 62,569.20

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1.5x scale

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.