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Finding the Fourth Proportional to 453,855.80, 680,783.70 and 254,790.20

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Solution

The fourth proportional to 453,855.80, 680,783.70 and 254,790.20 is: 382,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,855.80 : 680,783.70 = 254,790.20 : x
  2. Step 2: Convert to fraction form
    453,855.80/680,783.70 = 254,790.20/x
  3. Step 3: Cross multiply
    453,855.80x = 680,783.70 × 254,790.20
  4. Step 4: Simplify right side
    453,855.80x = 173,457,015,079.74
  5. Step 5: Solve for x
    x = 173,457,015,079.74/453,855.80
  6. Step 6: Final answer
    x = 382,185.30

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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.