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Finding the Fourth Proportional to 74,688.54, 103,092.93 and 44,478.78

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Solution

The fourth proportional to 74,688.54, 103,092.93 and 44,478.78 is: 61,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.54 : 103,092.93 = 44,478.78 : x
  2. Step 2: Convert to fraction form
    74,688.54/103,092.93 = 44,478.78/x
  3. Step 3: Cross multiply
    74,688.54x = 103,092.93 × 44,478.78
  4. Step 4: Simplify right side
    74,688.54x = 4,585,447,753.03
  5. Step 5: Solve for x
    x = 4,585,447,753.03/74,688.54
  6. Step 6: Final answer
    x = 61,394.26

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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.