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Finding the Fourth Proportional to 54,668.40, 82,002.60 and 47,756.40

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Solution

The fourth proportional to 54,668.40, 82,002.60 and 47,756.40 is: 71,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,668.40 : 82,002.60 = 47,756.40 : x
  2. Step 2: Convert to fraction form
    54,668.40/82,002.60 = 47,756.40/x
  3. Step 3: Cross multiply
    54,668.40x = 82,002.60 × 47,756.40
  4. Step 4: Simplify right side
    54,668.40x = 3,916,148,966.64
  5. Step 5: Solve for x
    x = 3,916,148,966.64/54,668.40
  6. Step 6: Final answer
    x = 71,634.60

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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.