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Finding the Fourth Proportional to 60,364.06, 90,490.65 and 20,893.57

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Solution

The fourth proportional to 60,364.06, 90,490.65 and 20,893.57 is: 31,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,364.06 : 90,490.65 = 20,893.57 : x
  2. Step 2: Convert to fraction form
    60,364.06/90,490.65 = 20,893.57/x
  3. Step 3: Cross multiply
    60,364.06x = 90,490.65 × 20,893.57
  4. Step 4: Simplify right side
    60,364.06x = 1,890,672,643.12
  5. Step 5: Solve for x
    x = 1,890,672,643.12/60,364.06
  6. Step 6: Final answer
    x = 31,321.16

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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.