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Finding the Fourth Proportional to 70,400.79, 97,154.51 and 43,542.81

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Solution

The fourth proportional to 70,400.79, 97,154.51 and 43,542.81 is: 60,089.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,400.79 : 97,154.51 = 43,542.81 : x
  2. Step 2: Convert to fraction form
    70,400.79/97,154.51 = 43,542.81/x
  3. Step 3: Cross multiply
    70,400.79x = 97,154.51 × 43,542.81
  4. Step 4: Simplify right side
    70,400.79x = 4,230,380,151.86
  5. Step 5: Solve for x
    x = 4,230,380,151.86/70,400.79
  6. Step 6: Final answer
    x = 60,089.95

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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.