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Finding the Fourth Proportional to 74,737.71, 103,137.26 and 40,746.11

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Solution

The fourth proportional to 74,737.71, 103,137.26 and 40,746.11 is: 56,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,737.71 : 103,137.26 = 40,746.11 : x
  2. Step 2: Convert to fraction form
    74,737.71/103,137.26 = 40,746.11/x
  3. Step 3: Cross multiply
    74,737.71x = 103,137.26 × 40,746.11
  4. Step 4: Simplify right side
    74,737.71x = 4,202,441,421.64
  5. Step 5: Solve for x
    x = 4,202,441,421.64/74,737.71
  6. Step 6: Final answer
    x = 56,229.20

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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.