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Finding the Fourth Proportional to 92,911.93, 139,367.90 and 40,320.25

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Solution

The fourth proportional to 92,911.93, 139,367.90 and 40,320.25 is: 60,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.93 : 139,367.90 = 40,320.25 : x
  2. Step 2: Convert to fraction form
    92,911.93/139,367.90 = 40,320.25/x
  3. Step 3: Cross multiply
    92,911.93x = 139,367.90 × 40,320.25
  4. Step 4: Simplify right side
    92,911.93x = 5,619,348,569.98
  5. Step 5: Solve for x
    x = 5,619,348,569.98/92,911.93
  6. Step 6: Final answer
    x = 60,480.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.