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Finding the Fourth Proportional to 514,936.80, 772,405.20 and 262,994.40

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Solution

The fourth proportional to 514,936.80, 772,405.20 and 262,994.40 is: 394,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,936.80 : 772,405.20 = 262,994.40 : x
  2. Step 2: Convert to fraction form
    514,936.80/772,405.20 = 262,994.40/x
  3. Step 3: Cross multiply
    514,936.80x = 772,405.20 × 262,994.40
  4. Step 4: Simplify right side
    514,936.80x = 203,138,242,130.88
  5. Step 5: Solve for x
    x = 203,138,242,130.88/514,936.80
  6. Step 6: Final answer
    x = 394,491.60

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Similar ratio
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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.