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Finding the Fourth Proportional to 509,983.80, 764,975.70 and 177,559.80

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Solution

The fourth proportional to 509,983.80, 764,975.70 and 177,559.80 is: 266,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,983.80 : 764,975.70 = 177,559.80 : x
  2. Step 2: Convert to fraction form
    509,983.80/764,975.70 = 177,559.80/x
  3. Step 3: Cross multiply
    509,983.80x = 764,975.70 × 177,559.80
  4. Step 4: Simplify right side
    509,983.80x = 135,828,932,296.86
  5. Step 5: Solve for x
    x = 135,828,932,296.86/509,983.80
  6. Step 6: Final answer
    x = 266,339.70

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Half scale
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Double scale
Find fourth proportional to 509,984.80, 764,977.20 and 177,560.80
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.