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Finding the Fourth Proportional to 192,683.78, 289,000.14 and 87,478.55

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Solution

The fourth proportional to 192,683.78, 289,000.14 and 87,478.55 is: 131,206.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,683.78 : 289,000.14 = 87,478.55 : x
  2. Step 2: Convert to fraction form
    192,683.78/289,000.14 = 87,478.55/x
  3. Step 3: Cross multiply
    192,683.78x = 289,000.14 × 87,478.55
  4. Step 4: Simplify right side
    192,683.78x = 25,281,311,752.00
  5. Step 5: Solve for x
    x = 25,281,311,752.00/192,683.78
  6. Step 6: Final answer
    x = 131,206.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.