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Finding the Fourth Proportional to 103,699.16, 155,548.65 and 28,819.27

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Solution

The fourth proportional to 103,699.16, 155,548.65 and 28,819.27 is: 43,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.16 : 155,548.65 = 28,819.27 : x
  2. Step 2: Convert to fraction form
    103,699.16/155,548.65 = 28,819.27/x
  3. Step 3: Cross multiply
    103,699.16x = 155,548.65 × 28,819.27
  4. Step 4: Simplify right side
    103,699.16x = 4,482,798,542.49
  5. Step 5: Solve for x
    x = 4,482,798,542.49/103,699.16
  6. Step 6: Final answer
    x = 43,228.88

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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.