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Finding the Fourth Proportional to 32,915.82, 45,423.81 and 18,578.67

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Solution

The fourth proportional to 32,915.82, 45,423.81 and 18,578.67 is: 25,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,915.82 : 45,423.81 = 18,578.67 : x
  2. Step 2: Convert to fraction form
    32,915.82/45,423.81 = 18,578.67/x
  3. Step 3: Cross multiply
    32,915.82x = 45,423.81 × 18,578.67
  4. Step 4: Simplify right side
    32,915.82x = 843,913,976.13
  5. Step 5: Solve for x
    x = 843,913,976.13/32,915.82
  6. Step 6: Final answer
    x = 25,638.55

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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.