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Finding the Fourth Proportional to 71,030.70, 98,019.03 and 40,794.70

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Solution

The fourth proportional to 71,030.70, 98,019.03 and 40,794.70 is: 56,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,030.70 : 98,019.03 = 40,794.70 : x
  2. Step 2: Convert to fraction form
    71,030.70/98,019.03 = 40,794.70/x
  3. Step 3: Cross multiply
    71,030.70x = 98,019.03 × 40,794.70
  4. Step 4: Simplify right side
    71,030.70x = 3,998,656,923.14
  5. Step 5: Solve for x
    x = 3,998,656,923.14/71,030.70
  6. Step 6: Final answer
    x = 56,294.77

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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.