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Finding the Fourth Proportional to 92,939.49, 139,330.86 and 40,309.34

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Solution

The fourth proportional to 92,939.49, 139,330.86 and 40,309.34 is: 60,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,939.49 : 139,330.86 = 40,309.34 : x
  2. Step 2: Convert to fraction form
    92,939.49/139,330.86 = 40,309.34/x
  3. Step 3: Cross multiply
    92,939.49x = 139,330.86 × 40,309.34
  4. Step 4: Simplify right side
    92,939.49x = 5,616,334,311.58
  5. Step 5: Solve for x
    x = 5,616,334,311.58/92,939.49
  6. Step 6: Final answer
    x = 60,430.01

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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.