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Finding the Fourth Proportional to 191,405.01, 287,107.62 and 86,100.96

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Solution

The fourth proportional to 191,405.01, 287,107.62 and 86,100.96 is: 129,151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,405.01 : 287,107.62 = 86,100.96 : x
  2. Step 2: Convert to fraction form
    191,405.01/287,107.62 = 86,100.96/x
  3. Step 3: Cross multiply
    191,405.01x = 287,107.62 × 86,100.96
  4. Step 4: Simplify right side
    191,405.01x = 24,720,241,705.32
  5. Step 5: Solve for x
    x = 24,720,241,705.32/191,405.01
  6. Step 6: Final answer
    x = 129,151.49

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1.5x scale

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.