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Finding the Fourth Proportional to 103,714.64, 155,564.44 and 40,522.88

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Solution

The fourth proportional to 103,714.64, 155,564.44 and 40,522.88 is: 60,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,714.64 : 155,564.44 = 40,522.88 : x
  2. Step 2: Convert to fraction form
    103,714.64/155,564.44 = 40,522.88/x
  3. Step 3: Cross multiply
    103,714.64x = 155,564.44 × 40,522.88
  4. Step 4: Simplify right side
    103,714.64x = 6,303,919,134.39
  5. Step 5: Solve for x
    x = 6,303,919,134.39/103,714.64
  6. Step 6: Final answer
    x = 60,781.38

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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.