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Finding the Fourth Proportional to 191,796.30, 287,694.45 and 73,406.70

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Solution

The fourth proportional to 191,796.30, 287,694.45 and 73,406.70 is: 110,110.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,796.30 : 287,694.45 = 73,406.70 : x
  2. Step 2: Convert to fraction form
    191,796.30/287,694.45 = 73,406.70/x
  3. Step 3: Cross multiply
    191,796.30x = 287,694.45 × 73,406.70
  4. Step 4: Simplify right side
    191,796.30x = 21,118,700,182.82
  5. Step 5: Solve for x
    x = 21,118,700,182.82/191,796.30
  6. Step 6: Final answer
    x = 110,110.05

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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.