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Finding the Fourth Proportional to 191,381.44, 287,115.84 and 58,280.56

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Solution

The fourth proportional to 191,381.44, 287,115.84 and 58,280.56 is: 87,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,381.44 : 287,115.84 = 58,280.56 : x
  2. Step 2: Convert to fraction form
    191,381.44/287,115.84 = 58,280.56/x
  3. Step 3: Cross multiply
    191,381.44x = 287,115.84 × 58,280.56
  4. Step 4: Simplify right side
    191,381.44x = 16,733,271,940.07
  5. Step 5: Solve for x
    x = 16,733,271,940.07/191,381.44
  6. Step 6: Final answer
    x = 87,434.14

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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.