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Finding the Fourth Proportional to 18,683.40, 26,176.20 and 18,683.40

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Solution

The fourth proportional to 18,683.40, 26,176.20 and 18,683.40 is: 26,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.40 : 26,176.20 = 18,683.40 : x
  2. Step 2: Convert to fraction form
    18,683.40/26,176.20 = 18,683.40/x
  3. Step 3: Cross multiply
    18,683.40x = 26,176.20 × 18,683.40
  4. Step 4: Simplify right side
    18,683.40x = 489,060,415.08
  5. Step 5: Solve for x
    x = 489,060,415.08/18,683.40
  6. Step 6: Final answer
    x = 26,176.20

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.