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Finding the Fourth Proportional to 18,661.93, 25,755.91 and 10,702.60

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Solution

The fourth proportional to 18,661.93, 25,755.91 and 10,702.60 is: 14,770.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.93 : 25,755.91 = 10,702.60 : x
  2. Step 2: Convert to fraction form
    18,661.93/25,755.91 = 10,702.60/x
  3. Step 3: Cross multiply
    18,661.93x = 25,755.91 × 10,702.60
  4. Step 4: Simplify right side
    18,661.93x = 275,655,111.22
  5. Step 5: Solve for x
    x = 275,655,111.22/18,661.93
  6. Step 6: Final answer
    x = 14,770.99

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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.