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Finding the Fourth Proportional to 18,746.66, 25,817.90 and 18,338.42

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Solution

The fourth proportional to 18,746.66, 25,817.90 and 18,338.42 is: 25,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.66 : 25,817.90 = 18,338.42 : x
  2. Step 2: Convert to fraction form
    18,746.66/25,817.90 = 18,338.42/x
  3. Step 3: Cross multiply
    18,746.66x = 25,817.90 × 18,338.42
  4. Step 4: Simplify right side
    18,746.66x = 473,459,466.57
  5. Step 5: Solve for x
    x = 473,459,466.57/18,746.66
  6. Step 6: Final answer
    x = 25,255.67

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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.