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Finding the Fourth Proportional to 74,466.52, 102,771.90 and 42,645.88

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Solution

The fourth proportional to 74,466.52, 102,771.90 and 42,645.88 is: 58,855.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,466.52 : 102,771.90 = 42,645.88 : x
  2. Step 2: Convert to fraction form
    74,466.52/102,771.90 = 42,645.88/x
  3. Step 3: Cross multiply
    74,466.52x = 102,771.90 × 42,645.88
  4. Step 4: Simplify right side
    74,466.52x = 4,382,798,114.77
  5. Step 5: Solve for x
    x = 4,382,798,114.77/74,466.52
  6. Step 6: Final answer
    x = 58,855.95

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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.