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Finding the Fourth Proportional to 191,785.56, 287,678.61 and 58,665.30

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Solution

The fourth proportional to 191,785.56, 287,678.61 and 58,665.30 is: 87,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,785.56 : 287,678.61 = 58,665.30 : x
  2. Step 2: Convert to fraction form
    191,785.56/287,678.61 = 58,665.30/x
  3. Step 3: Cross multiply
    191,785.56x = 287,678.61 × 58,665.30
  4. Step 4: Simplify right side
    191,785.56x = 16,876,751,959.23
  5. Step 5: Solve for x
    x = 16,876,751,959.23/191,785.56
  6. Step 6: Final answer
    x = 87,998.03

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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.