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Finding the Fourth Proportional to 92,707.76, 139,096.44 and 42,811.76

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Solution

The fourth proportional to 92,707.76, 139,096.44 and 42,811.76 is: 64,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,707.76 : 139,096.44 = 42,811.76 : x
  2. Step 2: Convert to fraction form
    92,707.76/139,096.44 = 42,811.76/x
  3. Step 3: Cross multiply
    92,707.76x = 139,096.44 × 42,811.76
  4. Step 4: Simplify right side
    92,707.76x = 5,954,963,406.13
  5. Step 5: Solve for x
    x = 5,954,963,406.13/92,707.76
  6. Step 6: Final answer
    x = 64,233.71

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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.