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Finding the Fourth Proportional to 191,763.40, 287,402.10 and 73,276.60

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Solution

The fourth proportional to 191,763.40, 287,402.10 and 73,276.60 is: 109,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,763.40 : 287,402.10 = 73,276.60 : x
  2. Step 2: Convert to fraction form
    191,763.40/287,402.10 = 73,276.60/x
  3. Step 3: Cross multiply
    191,763.40x = 287,402.10 × 73,276.60
  4. Step 4: Simplify right side
    191,763.40x = 21,059,848,720.86
  5. Step 5: Solve for x
    x = 21,059,848,720.86/191,763.40
  6. Step 6: Final answer
    x = 109,822.04

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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.