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Finding the Fourth Proportional to 219,907.80, 329,861.70 and 193,642.20

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Solution

The fourth proportional to 219,907.80, 329,861.70 and 193,642.20 is: 290,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,907.80 : 329,861.70 = 193,642.20 : x
  2. Step 2: Convert to fraction form
    219,907.80/329,861.70 = 193,642.20/x
  3. Step 3: Cross multiply
    219,907.80x = 329,861.70 × 193,642.20
  4. Step 4: Simplify right side
    219,907.80x = 63,875,145,283.74
  5. Step 5: Solve for x
    x = 63,875,145,283.74/219,907.80
  6. Step 6: Final answer
    x = 290,463.30

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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.