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Finding the Fourth Proportional to 619,366.21, 929,141.65 and 219,973.43

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Solution

The fourth proportional to 619,366.21, 929,141.65 and 219,973.43 is: 329,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,366.21 : 929,141.65 = 219,973.43 : x
  2. Step 2: Convert to fraction form
    619,366.21/929,141.65 = 219,973.43/x
  3. Step 3: Cross multiply
    619,366.21x = 929,141.65 × 219,973.43
  4. Step 4: Simplify right side
    619,366.21x = 204,386,478,304.18
  5. Step 5: Solve for x
    x = 204,386,478,304.18/619,366.21
  6. Step 6: Final answer
    x = 329,992.94

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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.