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Finding the Fourth Proportional to 503,539.60, 755,309.40 and 279,590.80

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Solution

The fourth proportional to 503,539.60, 755,309.40 and 279,590.80 is: 419,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,539.60 : 755,309.40 = 279,590.80 : x
  2. Step 2: Convert to fraction form
    503,539.60/755,309.40 = 279,590.80/x
  3. Step 3: Cross multiply
    503,539.60x = 755,309.40 × 279,590.80
  4. Step 4: Simplify right side
    503,539.60x = 211,177,559,393.52
  5. Step 5: Solve for x
    x = 211,177,559,393.52/503,539.60
  6. Step 6: Final answer
    x = 419,386.20

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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.