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Finding the Fourth Proportional to 55,756.68, 77,008.11 and 36,721.53

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Solution

The fourth proportional to 55,756.68, 77,008.11 and 36,721.53 is: 50,717.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,756.68 : 77,008.11 = 36,721.53 : x
  2. Step 2: Convert to fraction form
    55,756.68/77,008.11 = 36,721.53/x
  3. Step 3: Cross multiply
    55,756.68x = 77,008.11 × 36,721.53
  4. Step 4: Simplify right side
    55,756.68x = 2,827,855,621.61
  5. Step 5: Solve for x
    x = 2,827,855,621.61/55,756.68
  6. Step 6: Final answer
    x = 50,717.79

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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.