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Finding the Fourth Proportional to 383,333.45, 528,987.76 and 220,016.84

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Solution

The fourth proportional to 383,333.45, 528,987.76 and 220,016.84 is: 303,616.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,333.45 : 528,987.76 = 220,016.84 : x
  2. Step 2: Convert to fraction form
    383,333.45/528,987.76 = 220,016.84/x
  3. Step 3: Cross multiply
    383,333.45x = 528,987.76 × 220,016.84
  4. Step 4: Simplify right side
    383,333.45x = 116,386,215,353.88
  5. Step 5: Solve for x
    x = 116,386,215,353.88/383,333.45
  6. Step 6: Final answer
    x = 303,616.12

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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.