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Finding the Fourth Proportional to 55,649.95, 76,823.53 and 31,772.01

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Solution

The fourth proportional to 55,649.95, 76,823.53 and 31,772.01 is: 43,860.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,649.95 : 76,823.53 = 31,772.01 : x
  2. Step 2: Convert to fraction form
    55,649.95/76,823.53 = 31,772.01/x
  3. Step 3: Cross multiply
    55,649.95x = 76,823.53 × 31,772.01
  4. Step 4: Simplify right side
    55,649.95x = 2,440,837,963.40
  5. Step 5: Solve for x
    x = 2,440,837,963.40/55,649.95
  6. Step 6: Final answer
    x = 43,860.56

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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.