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Finding the Fourth Proportional to 191,967.52, 287,950.74 and 67,308.52

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Solution

The fourth proportional to 191,967.52, 287,950.74 and 67,308.52 is: 100,962.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,967.52 : 287,950.74 = 67,308.52 : x
  2. Step 2: Convert to fraction form
    191,967.52/287,950.74 = 67,308.52/x
  3. Step 3: Cross multiply
    191,967.52x = 287,950.74 × 67,308.52
  4. Step 4: Simplify right side
    191,967.52x = 19,381,538,142.30
  5. Step 5: Solve for x
    x = 19,381,538,142.30/191,967.52
  6. Step 6: Final answer
    x = 100,962.59

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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.