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Finding the Fourth Proportional to 74,274.78, 102,492.77 and 43,644.63

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Solution

The fourth proportional to 74,274.78, 102,492.77 and 43,644.63 is: 60,225.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,274.78 : 102,492.77 = 43,644.63 : x
  2. Step 2: Convert to fraction form
    74,274.78/102,492.77 = 43,644.63/x
  3. Step 3: Cross multiply
    74,274.78x = 102,492.77 × 43,644.63
  4. Step 4: Simplify right side
    74,274.78x = 4,473,258,806.10
  5. Step 5: Solve for x
    x = 4,473,258,806.10/74,274.78
  6. Step 6: Final answer
    x = 60,225.81

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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.