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Finding the Fourth Proportional to 74,953.68, 112,398.51 and 43,385.53

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Solution

The fourth proportional to 74,953.68, 112,398.51 and 43,385.53 is: 65,059.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,953.68 : 112,398.51 = 43,385.53 : x
  2. Step 2: Convert to fraction form
    74,953.68/112,398.51 = 43,385.53/x
  3. Step 3: Cross multiply
    74,953.68x = 112,398.51 × 43,385.53
  4. Step 4: Simplify right side
    74,953.68x = 4,876,468,483.87
  5. Step 5: Solve for x
    x = 4,876,468,483.87/74,953.68
  6. Step 6: Final answer
    x = 65,059.76

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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.