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Finding the Fourth Proportional to 503,764.80, 755,647.20 and 291,188.40

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Solution

The fourth proportional to 503,764.80, 755,647.20 and 291,188.40 is: 436,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,764.80 : 755,647.20 = 291,188.40 : x
  2. Step 2: Convert to fraction form
    503,764.80/755,647.20 = 291,188.40/x
  3. Step 3: Cross multiply
    503,764.80x = 755,647.20 × 291,188.40
  4. Step 4: Simplify right side
    503,764.80x = 220,035,699,132.48
  5. Step 5: Solve for x
    x = 220,035,699,132.48/503,764.80
  6. Step 6: Final answer
    x = 436,782.60

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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.