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Finding the Fourth Proportional to 74,757.60, 103,173.72 and 46,071.48

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Solution

The fourth proportional to 74,757.60, 103,173.72 and 46,071.48 is: 63,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,757.60 : 103,173.72 = 46,071.48 : x
  2. Step 2: Convert to fraction form
    74,757.60/103,173.72 = 46,071.48/x
  3. Step 3: Cross multiply
    74,757.60x = 103,173.72 × 46,071.48
  4. Step 4: Simplify right side
    74,757.60x = 4,753,365,977.51
  5. Step 5: Solve for x
    x = 4,753,365,977.51/74,757.60
  6. Step 6: Final answer
    x = 63,583.72

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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.