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Finding the Fourth Proportional to 61,059.99, 91,603.14 and 18,939.23

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Solution

The fourth proportional to 61,059.99, 91,603.14 and 18,939.23 is: 28,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,059.99 : 91,603.14 = 18,939.23 : x
  2. Step 2: Convert to fraction form
    61,059.99/91,603.14 = 18,939.23/x
  3. Step 3: Cross multiply
    61,059.99x = 91,603.14 × 18,939.23
  4. Step 4: Simplify right side
    61,059.99x = 1,734,892,937.18
  5. Step 5: Solve for x
    x = 1,734,892,937.18/61,059.99
  6. Step 6: Final answer
    x = 28,412.93

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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.