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Finding the Fourth Proportional to 191,364.96, 286,861.20 and 91,499.28

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Solution

The fourth proportional to 191,364.96, 286,861.20 and 91,499.28 is: 137,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,364.96 : 286,861.20 = 91,499.28 : x
  2. Step 2: Convert to fraction form
    191,364.96/286,861.20 = 91,499.28/x
  3. Step 3: Cross multiply
    191,364.96x = 286,861.20 × 91,499.28
  4. Step 4: Simplify right side
    191,364.96x = 26,247,593,259.94
  5. Step 5: Solve for x
    x = 26,247,593,259.94/191,364.96
  6. Step 6: Final answer
    x = 137,159.87

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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.