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Finding the Fourth Proportional to 74,738.34, 103,135.41 and 44,543.70

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Solution

The fourth proportional to 74,738.34, 103,135.41 and 44,543.70 is: 61,468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,738.34 : 103,135.41 = 44,543.70 : x
  2. Step 2: Convert to fraction form
    74,738.34/103,135.41 = 44,543.70/x
  3. Step 3: Cross multiply
    74,738.34x = 103,135.41 × 44,543.70
  4. Step 4: Simplify right side
    74,738.34x = 4,594,032,762.42
  5. Step 5: Solve for x
    x = 4,594,032,762.42/74,738.34
  6. Step 6: Final answer
    x = 61,468.22

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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.