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Finding the Fourth Proportional to 103,859.76, 155,731.28 and 43,051.44

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Solution

The fourth proportional to 103,859.76, 155,731.28 and 43,051.44 is: 64,552.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,859.76 : 155,731.28 = 43,051.44 : x
  2. Step 2: Convert to fraction form
    103,859.76/155,731.28 = 43,051.44/x
  3. Step 3: Cross multiply
    103,859.76x = 155,731.28 × 43,051.44
  4. Step 4: Simplify right side
    103,859.76x = 6,704,455,857.04
  5. Step 5: Solve for x
    x = 6,704,455,857.04/103,859.76
  6. Step 6: Final answer
    x = 64,552.97

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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.