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Finding the Fourth Proportional to 74,614.75, 103,055.84 and 49,420.51

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Solution

The fourth proportional to 74,614.75, 103,055.84 and 49,420.51 is: 68,258.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,614.75 : 103,055.84 = 49,420.51 : x
  2. Step 2: Convert to fraction form
    74,614.75/103,055.84 = 49,420.51/x
  3. Step 3: Cross multiply
    74,614.75x = 103,055.84 × 49,420.51
  4. Step 4: Simplify right side
    74,614.75x = 5,093,071,924.18
  5. Step 5: Solve for x
    x = 5,093,071,924.18/74,614.75
  6. Step 6: Final answer
    x = 68,258.25

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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.