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Finding the Fourth Proportional to 146,920.80, 220,381.20 and 94,432.80

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Solution

The fourth proportional to 146,920.80, 220,381.20 and 94,432.80 is: 141,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,920.80 : 220,381.20 = 94,432.80 : x
  2. Step 2: Convert to fraction form
    146,920.80/220,381.20 = 94,432.80/x
  3. Step 3: Cross multiply
    146,920.80x = 220,381.20 × 94,432.80
  4. Step 4: Simplify right side
    146,920.80x = 20,811,213,783.36
  5. Step 5: Solve for x
    x = 20,811,213,783.36/146,920.80
  6. Step 6: Final answer
    x = 141,649.20

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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.