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Finding the Fourth Proportional to 58,055.67, 87,122.34 and 21,119.67

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Solution

The fourth proportional to 58,055.67, 87,122.34 and 21,119.67 is: 31,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,055.67 : 87,122.34 = 21,119.67 : x
  2. Step 2: Convert to fraction form
    58,055.67/87,122.34 = 21,119.67/x
  3. Step 3: Cross multiply
    58,055.67x = 87,122.34 × 21,119.67
  4. Step 4: Simplify right side
    58,055.67x = 1,839,995,070.43
  5. Step 5: Solve for x
    x = 1,839,995,070.43/58,055.67
  6. Step 6: Final answer
    x = 31,693.63

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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.