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Finding the Fourth Proportional to 192,432.40, 288,211.20 and 98,828.80

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Solution

The fourth proportional to 192,432.40, 288,211.20 and 98,828.80 is: 148,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,432.40 : 288,211.20 = 98,828.80 : x
  2. Step 2: Convert to fraction form
    192,432.40/288,211.20 = 98,828.80/x
  3. Step 3: Cross multiply
    192,432.40x = 288,211.20 × 98,828.80
  4. Step 4: Simplify right side
    192,432.40x = 28,483,567,042.56
  5. Step 5: Solve for x
    x = 28,483,567,042.56/192,432.40
  6. Step 6: Final answer
    x = 148,018.56

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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.