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Finding the Fourth Proportional to 15,432.92, 23,138.84 and 7,423.46

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Solution

The fourth proportional to 15,432.92, 23,138.84 and 7,423.46 is: 11,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.92 : 23,138.84 = 7,423.46 : x
  2. Step 2: Convert to fraction form
    15,432.92/23,138.84 = 7,423.46/x
  3. Step 3: Cross multiply
    15,432.92x = 23,138.84 × 7,423.46
  4. Step 4: Simplify right side
    15,432.92x = 171,770,253.19
  5. Step 5: Solve for x
    x = 171,770,253.19/15,432.92
  6. Step 6: Final answer
    x = 11,130.12

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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.