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Finding the Fourth Proportional to 453,994.20, 680,991.30 and 405,005.40

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Solution

The fourth proportional to 453,994.20, 680,991.30 and 405,005.40 is: 607,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,994.20 : 680,991.30 = 405,005.40 : x
  2. Step 2: Convert to fraction form
    453,994.20/680,991.30 = 405,005.40/x
  3. Step 3: Cross multiply
    453,994.20x = 680,991.30 × 405,005.40
  4. Step 4: Simplify right side
    453,994.20x = 275,805,153,853.02
  5. Step 5: Solve for x
    x = 275,805,153,853.02/453,994.20
  6. Step 6: Final answer
    x = 607,508.10

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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.