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Finding the Fourth Proportional to 536,679.60, 805,019.40 and 347,722.80

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Solution

The fourth proportional to 536,679.60, 805,019.40 and 347,722.80 is: 521,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,679.60 : 805,019.40 = 347,722.80 : x
  2. Step 2: Convert to fraction form
    536,679.60/805,019.40 = 347,722.80/x
  3. Step 3: Cross multiply
    536,679.60x = 805,019.40 × 347,722.80
  4. Step 4: Simplify right side
    536,679.60x = 279,923,599,822.32
  5. Step 5: Solve for x
    x = 279,923,599,822.32/536,679.60
  6. Step 6: Final answer
    x = 521,584.20

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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.