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Finding the Fourth Proportional to 191,540.70, 287,341.43 and 58,390.47

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Solution

The fourth proportional to 191,540.70, 287,341.43 and 58,390.47 is: 87,594.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,540.70 : 287,341.43 = 58,390.47 : x
  2. Step 2: Convert to fraction form
    191,540.70/287,341.43 = 58,390.47/x
  3. Step 3: Cross multiply
    191,540.70x = 287,341.43 × 58,390.47
  4. Step 4: Simplify right side
    191,540.70x = 16,778,000,856.22
  5. Step 5: Solve for x
    x = 16,778,000,856.22/191,540.70
  6. Step 6: Final answer
    x = 87,594.96

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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.