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Finding the Fourth Proportional to 540,896.80, 811,345.20 and 146,912.80

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Solution

The fourth proportional to 540,896.80, 811,345.20 and 146,912.80 is: 220,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,896.80 : 811,345.20 = 146,912.80 : x
  2. Step 2: Convert to fraction form
    540,896.80/811,345.20 = 146,912.80/x
  3. Step 3: Cross multiply
    540,896.80x = 811,345.20 × 146,912.80
  4. Step 4: Simplify right side
    540,896.80x = 119,196,995,098.56
  5. Step 5: Solve for x
    x = 119,196,995,098.56/540,896.80
  6. Step 6: Final answer
    x = 220,369.20

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Double scale
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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.