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Finding the Fourth Proportional to 534,409.20, 800,933.40 and 218,509.20

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Solution

The fourth proportional to 534,409.20, 800,933.40 and 218,509.20 is: 327,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,409.20 : 800,933.40 = 218,509.20 : x
  2. Step 2: Convert to fraction form
    534,409.20/800,933.40 = 218,509.20/x
  3. Step 3: Cross multiply
    534,409.20x = 800,933.40 × 218,509.20
  4. Step 4: Simplify right side
    534,409.20x = 175,011,316,487.28
  5. Step 5: Solve for x
    x = 175,011,316,487.28/534,409.20
  6. Step 6: Final answer
    x = 327,485.60

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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.