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Finding the Fourth Proportional to 621,064.56, 931,596.39 and 200,340.44

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Solution

The fourth proportional to 621,064.56, 931,596.39 and 200,340.44 is: 300,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,064.56 : 931,596.39 = 200,340.44 : x
  2. Step 2: Convert to fraction form
    621,064.56/931,596.39 = 200,340.44/x
  3. Step 3: Cross multiply
    621,064.56x = 931,596.39 × 200,340.44
  4. Step 4: Simplify right side
    621,064.56x = 186,636,429,510.52
  5. Step 5: Solve for x
    x = 186,636,429,510.52/621,064.56
  6. Step 6: Final answer
    x = 300,510.51

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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.