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Finding the Fourth Proportional to 191,309.59, 286,841.30 and 91,467.57

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Solution

The fourth proportional to 191,309.59, 286,841.30 and 91,467.57 is: 137,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,309.59 : 286,841.30 = 91,467.57 : x
  2. Step 2: Convert to fraction form
    191,309.59/286,841.30 = 91,467.57/x
  3. Step 3: Cross multiply
    191,309.59x = 286,841.30 × 91,467.57
  4. Step 4: Simplify right side
    191,309.59x = 26,236,676,229.30
  5. Step 5: Solve for x
    x = 26,236,676,229.30/191,309.59
  6. Step 6: Final answer
    x = 137,142.51

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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.