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Finding the Fourth Proportional to 74,814.98, 103,246.45 and 42,554.84

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Solution

The fourth proportional to 74,814.98, 103,246.45 and 42,554.84 is: 58,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,814.98 : 103,246.45 = 42,554.84 : x
  2. Step 2: Convert to fraction form
    74,814.98/103,246.45 = 42,554.84/x
  3. Step 3: Cross multiply
    74,814.98x = 103,246.45 × 42,554.84
  4. Step 4: Simplify right side
    74,814.98x = 4,393,635,537.70
  5. Step 5: Solve for x
    x = 4,393,635,537.70/74,814.98
  6. Step 6: Final answer
    x = 58,726.69

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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.