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Finding the Fourth Proportional to 74,983.68, 103,480.56 and 43,152.66

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Solution

The fourth proportional to 74,983.68, 103,480.56 and 43,152.66 is: 59,552.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,983.68 : 103,480.56 = 43,152.66 : x
  2. Step 2: Convert to fraction form
    74,983.68/103,480.56 = 43,152.66/x
  3. Step 3: Cross multiply
    74,983.68x = 103,480.56 × 43,152.66
  4. Step 4: Simplify right side
    74,983.68x = 4,465,461,422.29
  5. Step 5: Solve for x
    x = 4,465,461,422.29/74,983.68
  6. Step 6: Final answer
    x = 59,552.44

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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.