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Finding the Fourth Proportional to 513,559.40, 770,339.41 and 193,624.38

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Solution

The fourth proportional to 513,559.40, 770,339.41 and 193,624.38 is: 290,436.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,559.40 : 770,339.41 = 193,624.38 : x
  2. Step 2: Convert to fraction form
    513,559.40/770,339.41 = 193,624.38/x
  3. Step 3: Cross multiply
    513,559.40x = 770,339.41 × 193,624.38
  4. Step 4: Simplify right side
    513,559.40x = 149,156,490,166.76
  5. Step 5: Solve for x
    x = 149,156,490,166.76/513,559.40
  6. Step 6: Final answer
    x = 290,436.69

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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.