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Finding the Fourth Proportional to 77,264.65, 106,627.84 and 43,274.57

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Solution

The fourth proportional to 77,264.65, 106,627.84 and 43,274.57 is: 59,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,264.65 : 106,627.84 = 43,274.57 : x
  2. Step 2: Convert to fraction form
    77,264.65/106,627.84 = 43,274.57/x
  3. Step 3: Cross multiply
    77,264.65x = 106,627.84 × 43,274.57
  4. Step 4: Simplify right side
    77,264.65x = 4,614,274,127.90
  5. Step 5: Solve for x
    x = 4,614,274,127.90/77,264.65
  6. Step 6: Final answer
    x = 59,720.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.