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Finding the Fourth Proportional to 74,785, 103,203.30 and 41,251

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Solution

The fourth proportional to 74,785, 103,203.30 and 41,251 is: 56,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,785 : 103,203.30 = 41,251 : x
  2. Step 2: Convert to fraction form
    74,785/103,203.30 = 41,251/x
  3. Step 3: Cross multiply
    74,785x = 103,203.30 × 41,251
  4. Step 4: Simplify right side
    74,785x = 4,257,239,328.30
  5. Step 5: Solve for x
    x = 4,257,239,328.30/74,785
  6. Step 6: Final answer
    x = 56,926.38

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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.