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Finding the Fourth Proportional to 58,308.67, 87,475.74 and 18,869.77

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Solution

The fourth proportional to 58,308.67, 87,475.74 and 18,869.77 is: 28,308.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,308.67 : 87,475.74 = 18,869.77 : x
  2. Step 2: Convert to fraction form
    58,308.67/87,475.74 = 18,869.77/x
  3. Step 3: Cross multiply
    58,308.67x = 87,475.74 × 18,869.77
  4. Step 4: Simplify right side
    58,308.67x = 1,650,647,094.38
  5. Step 5: Solve for x
    x = 1,650,647,094.38/58,308.67
  6. Step 6: Final answer
    x = 28,308.78

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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.