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Finding the Fourth Proportional to 74,851.83, 103,291.13 and 40,853.57

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Solution

The fourth proportional to 74,851.83, 103,291.13 and 40,853.57 is: 56,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,851.83 : 103,291.13 = 40,853.57 : x
  2. Step 2: Convert to fraction form
    74,851.83/103,291.13 = 40,853.57/x
  3. Step 3: Cross multiply
    74,851.83x = 103,291.13 × 40,853.57
  4. Step 4: Simplify right side
    74,851.83x = 4,219,810,995.51
  5. Step 5: Solve for x
    x = 4,219,810,995.51/74,851.83
  6. Step 6: Final answer
    x = 56,375.52

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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.