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Finding the Fourth Proportional to 99,721.74, 149,538.75 and 37,348.50

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Solution

The fourth proportional to 99,721.74, 149,538.75 and 37,348.50 is: 56,006.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,721.74 : 149,538.75 = 37,348.50 : x
  2. Step 2: Convert to fraction form
    99,721.74/149,538.75 = 37,348.50/x
  3. Step 3: Cross multiply
    99,721.74x = 149,538.75 × 37,348.50
  4. Step 4: Simplify right side
    99,721.74x = 5,585,048,004.38
  5. Step 5: Solve for x
    x = 5,585,048,004.38/99,721.74
  6. Step 6: Final answer
    x = 56,006.32

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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.