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Finding the Fourth Proportional to 38,858.70, 58,288.05 and 15,501.90

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Solution

The fourth proportional to 38,858.70, 58,288.05 and 15,501.90 is: 23,252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,858.70 : 58,288.05 = 15,501.90 : x
  2. Step 2: Convert to fraction form
    38,858.70/58,288.05 = 15,501.90/x
  3. Step 3: Cross multiply
    38,858.70x = 58,288.05 × 15,501.90
  4. Step 4: Simplify right side
    38,858.70x = 903,575,522.30
  5. Step 5: Solve for x
    x = 903,575,522.30/38,858.70
  6. Step 6: Final answer
    x = 23,252.85

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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.