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Finding the Fourth Proportional to 641,374.76, 961,791.44 and 192,159.47

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Solution

The fourth proportional to 641,374.76, 961,791.44 and 192,159.47 is: 288,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,374.76 : 961,791.44 = 192,159.47 : x
  2. Step 2: Convert to fraction form
    641,374.76/961,791.44 = 192,159.47/x
  3. Step 3: Cross multiply
    641,374.76x = 961,791.44 × 192,159.47
  4. Step 4: Simplify right side
    641,374.76x = 184,817,327,591.18
  5. Step 5: Solve for x
    x = 184,817,327,591.18/641,374.76
  6. Step 6: Final answer
    x = 288,158.10

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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.