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Finding the Fourth Proportional to 191,898.92, 287,779.26 and 81,099.56

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Solution

The fourth proportional to 191,898.92, 287,779.26 and 81,099.56 is: 121,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,898.92 : 287,779.26 = 81,099.56 : x
  2. Step 2: Convert to fraction form
    191,898.92/287,779.26 = 81,099.56/x
  3. Step 3: Cross multiply
    191,898.92x = 287,779.26 × 81,099.56
  4. Step 4: Simplify right side
    191,898.92x = 23,338,771,363.13
  5. Step 5: Solve for x
    x = 23,338,771,363.13/191,898.92
  6. Step 6: Final answer
    x = 121,620.13

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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.