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Finding the Fourth Proportional to 578,631.40, 867,687.90 and 223,527.40

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Solution

The fourth proportional to 578,631.40, 867,687.90 and 223,527.40 is: 335,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,631.40 : 867,687.90 = 223,527.40 : x
  2. Step 2: Convert to fraction form
    578,631.40/867,687.90 = 223,527.40/x
  3. Step 3: Cross multiply
    578,631.40x = 867,687.90 × 223,527.40
  4. Step 4: Simplify right side
    578,631.40x = 193,952,020,298.46
  5. Step 5: Solve for x
    x = 193,952,020,298.46/578,631.40
  6. Step 6: Final answer
    x = 335,190.97

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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.