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Finding the Fourth Proportional to 619,364.40, 929,138.93 and 219,971.62

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Solution

The fourth proportional to 619,364.40, 929,138.93 and 219,971.62 is: 329,990.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,364.40 : 929,138.93 = 219,971.62 : x
  2. Step 2: Convert to fraction form
    619,364.40/929,138.93 = 219,971.62/x
  3. Step 3: Cross multiply
    619,364.40x = 929,138.93 × 219,971.62
  4. Step 4: Simplify right side
    619,364.40x = 204,384,195,637.17
  5. Step 5: Solve for x
    x = 204,384,195,637.17/619,364.40
  6. Step 6: Final answer
    x = 329,990.22

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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.