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Finding the Fourth Proportional to 619,409.70, 929,187.45 and 219,966.30

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Solution

The fourth proportional to 619,409.70, 929,187.45 and 219,966.30 is: 329,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,409.70 : 929,187.45 = 219,966.30 : x
  2. Step 2: Convert to fraction form
    619,409.70/929,187.45 = 219,966.30/x
  3. Step 3: Cross multiply
    619,409.70x = 929,187.45 × 219,966.30
  4. Step 4: Simplify right side
    619,409.70x = 204,389,925,382.94
  5. Step 5: Solve for x
    x = 204,389,925,382.94/619,409.70
  6. Step 6: Final answer
    x = 329,975.34

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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.