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Finding the Fourth Proportional to 73,814.40, 110,721.60 and 47,570.40

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Solution

The fourth proportional to 73,814.40, 110,721.60 and 47,570.40 is: 71,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,814.40 : 110,721.60 = 47,570.40 : x
  2. Step 2: Convert to fraction form
    73,814.40/110,721.60 = 47,570.40/x
  3. Step 3: Cross multiply
    73,814.40x = 110,721.60 × 47,570.40
  4. Step 4: Simplify right side
    73,814.40x = 5,267,070,800.64
  5. Step 5: Solve for x
    x = 5,267,070,800.64/73,814.40
  6. Step 6: Final answer
    x = 71,355.60

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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.