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Finding the Fourth Proportional to 515,581.02, 711,342.36 and 300,568.86

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Solution

The fourth proportional to 515,581.02, 711,342.36 and 300,568.86 is: 414,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,581.02 : 711,342.36 = 300,568.86 : x
  2. Step 2: Convert to fraction form
    515,581.02/711,342.36 = 300,568.86/x
  3. Step 3: Cross multiply
    515,581.02x = 711,342.36 × 300,568.86
  4. Step 4: Simplify right side
    515,581.02x = 213,807,362,214.91
  5. Step 5: Solve for x
    x = 213,807,362,214.91/515,581.02
  6. Step 6: Final answer
    x = 414,692.07

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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.