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Finding the Fourth Proportional to 74,620.60, 102,973.44 and 42,767.44

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Solution

The fourth proportional to 74,620.60, 102,973.44 and 42,767.44 is: 59,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,620.60 : 102,973.44 = 42,767.44 : x
  2. Step 2: Convert to fraction form
    74,620.60/102,973.44 = 42,767.44/x
  3. Step 3: Cross multiply
    74,620.60x = 102,973.44 × 42,767.44
  4. Step 4: Simplify right side
    74,620.60x = 4,403,910,416.79
  5. Step 5: Solve for x
    x = 4,403,910,416.79/74,620.60
  6. Step 6: Final answer
    x = 59,017.35

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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.