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Finding the Fourth Proportional to 191,806.70, 287,731.65 and 58,685.90

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Solution

The fourth proportional to 191,806.70, 287,731.65 and 58,685.90 is: 88,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,806.70 : 287,731.65 = 58,685.90 : x
  2. Step 2: Convert to fraction form
    191,806.70/287,731.65 = 58,685.90/x
  3. Step 3: Cross multiply
    191,806.70x = 287,731.65 × 58,685.90
  4. Step 4: Simplify right side
    191,806.70x = 16,885,790,838.74
  5. Step 5: Solve for x
    x = 16,885,790,838.74/191,806.70
  6. Step 6: Final answer
    x = 88,035.46

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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.