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Finding the Fourth Proportional to 18,702.67, 25,798.21 and 12,737.02

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Solution

The fourth proportional to 18,702.67, 25,798.21 and 12,737.02 is: 17,569.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.67 : 25,798.21 = 12,737.02 : x
  2. Step 2: Convert to fraction form
    18,702.67/25,798.21 = 12,737.02/x
  3. Step 3: Cross multiply
    18,702.67x = 25,798.21 × 12,737.02
  4. Step 4: Simplify right side
    18,702.67x = 328,592,316.73
  5. Step 5: Solve for x
    x = 328,592,316.73/18,702.67
  6. Step 6: Final answer
    x = 17,569.27

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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.