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Finding the Fourth Proportional to 74,990.34, 103,486.59 and 41,456.34

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Solution

The fourth proportional to 74,990.34, 103,486.59 and 41,456.34 is: 57,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,990.34 : 103,486.59 = 41,456.34 : x
  2. Step 2: Convert to fraction form
    74,990.34/103,486.59 = 41,456.34/x
  3. Step 3: Cross multiply
    74,990.34x = 103,486.59 × 41,456.34
  4. Step 4: Simplify right side
    74,990.34x = 4,290,175,260.48
  5. Step 5: Solve for x
    x = 4,290,175,260.48/74,990.34
  6. Step 6: Final answer
    x = 57,209.71

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1.5x scale

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.