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Finding the Fourth Proportional to 18,626.18, 25,702.18 and 10,668.74

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Solution

The fourth proportional to 18,626.18, 25,702.18 and 10,668.74 is: 14,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.18 : 25,702.18 = 10,668.74 : x
  2. Step 2: Convert to fraction form
    18,626.18/25,702.18 = 10,668.74/x
  3. Step 3: Cross multiply
    18,626.18x = 25,702.18 × 10,668.74
  4. Step 4: Simplify right side
    18,626.18x = 274,209,720.67
  5. Step 5: Solve for x
    x = 274,209,720.67/18,626.18
  6. Step 6: Final answer
    x = 14,721.74

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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.