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Finding the Fourth Proportional to 191,941.59, 287,912.39 and 98,387.67

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Solution

The fourth proportional to 191,941.59, 287,912.39 and 98,387.67 is: 147,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,941.59 : 287,912.39 = 98,387.67 : x
  2. Step 2: Convert to fraction form
    191,941.59/287,912.39 = 98,387.67/x
  3. Step 3: Cross multiply
    191,941.59x = 287,912.39 × 98,387.67
  4. Step 4: Simplify right side
    191,941.59x = 28,327,028,724.29
  5. Step 5: Solve for x
    x = 28,327,028,724.29/191,941.59
  6. Step 6: Final answer
    x = 147,581.51

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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.