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Finding the Fourth Proportional to 74,903.72, 103,365.70 and 41,369

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Solution

The fourth proportional to 74,903.72, 103,365.70 and 41,369 is: 57,088.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,903.72 : 103,365.70 = 41,369 : x
  2. Step 2: Convert to fraction form
    74,903.72/103,365.70 = 41,369/x
  3. Step 3: Cross multiply
    74,903.72x = 103,365.70 × 41,369
  4. Step 4: Simplify right side
    74,903.72x = 4,276,135,643.30
  5. Step 5: Solve for x
    x = 4,276,135,643.30/74,903.72
  6. Step 6: Final answer
    x = 57,088.43

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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.