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Finding the Fourth Proportional to 53,466.80, 80,329.80 and 47,764.40

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Solution

The fourth proportional to 53,466.80, 80,329.80 and 47,764.40 is: 71,762.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,466.80 : 80,329.80 = 47,764.40 : x
  2. Step 2: Convert to fraction form
    53,466.80/80,329.80 = 47,764.40/x
  3. Step 3: Cross multiply
    53,466.80x = 80,329.80 × 47,764.40
  4. Step 4: Simplify right side
    53,466.80x = 3,836,904,699.12
  5. Step 5: Solve for x
    x = 3,836,904,699.12/53,466.80
  6. Step 6: Final answer
    x = 71,762.38

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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.