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Finding the Fourth Proportional to 570,958.40, 856,437.60 and 171,660.80

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Solution

The fourth proportional to 570,958.40, 856,437.60 and 171,660.80 is: 257,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,958.40 : 856,437.60 = 171,660.80 : x
  2. Step 2: Convert to fraction form
    570,958.40/856,437.60 = 171,660.80/x
  3. Step 3: Cross multiply
    570,958.40x = 856,437.60 × 171,660.80
  4. Step 4: Simplify right side
    570,958.40x = 147,016,763,566.08
  5. Step 5: Solve for x
    x = 147,016,763,566.08/570,958.40
  6. Step 6: Final answer
    x = 257,491.20

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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.