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Finding the Fourth Proportional to 60,523.79, 90,788.12 and 21,084.89

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Solution

The fourth proportional to 60,523.79, 90,788.12 and 21,084.89 is: 31,628.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,523.79 : 90,788.12 = 21,084.89 : x
  2. Step 2: Convert to fraction form
    60,523.79/90,788.12 = 21,084.89/x
  3. Step 3: Cross multiply
    60,523.79x = 90,788.12 × 21,084.89
  4. Step 4: Simplify right side
    60,523.79x = 1,914,257,803.19
  5. Step 5: Solve for x
    x = 1,914,257,803.19/60,523.79
  6. Step 6: Final answer
    x = 31,628.19

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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.