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Finding the Fourth Proportional to 71,260.82, 106,861.15 and 21,348.01

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Solution

The fourth proportional to 71,260.82, 106,861.15 and 21,348.01 is: 32,013.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,260.82 : 106,861.15 = 21,348.01 : x
  2. Step 2: Convert to fraction form
    71,260.82/106,861.15 = 21,348.01/x
  3. Step 3: Cross multiply
    71,260.82x = 106,861.15 × 21,348.01
  4. Step 4: Simplify right side
    71,260.82x = 2,281,272,898.81
  5. Step 5: Solve for x
    x = 2,281,272,898.81/71,260.82
  6. Step 6: Final answer
    x = 32,013.00

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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.