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Finding the Fourth Proportional to 67,950.63, 101,946.60 and 21,203.91

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Solution

The fourth proportional to 67,950.63, 101,946.60 and 21,203.91 is: 31,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,950.63 : 101,946.60 = 21,203.91 : x
  2. Step 2: Convert to fraction form
    67,950.63/101,946.60 = 21,203.91/x
  3. Step 3: Cross multiply
    67,950.63x = 101,946.60 × 21,203.91
  4. Step 4: Simplify right side
    67,950.63x = 2,161,666,531.21
  5. Step 5: Solve for x
    x = 2,161,666,531.21/67,950.63
  6. Step 6: Final answer
    x = 31,812.31

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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.