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Finding the Fourth Proportional to 13,188,892.80, 19,783,339.20 and 13,188,892.80

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Solution

The fourth proportional to 13,188,892.80, 19,783,339.20 and 13,188,892.80 is: 19,783,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,892.80 : 19,783,339.20 = 13,188,892.80 : x
  2. Step 2: Convert to fraction form
    13,188,892.80/19,783,339.20 = 13,188,892.80/x
  3. Step 3: Cross multiply
    13,188,892.80x = 19,783,339.20 × 13,188,892.80
  4. Step 4: Simplify right side
    13,188,892.80x = 260,920,339,934,837.75
  5. Step 5: Solve for x
    x = 260,920,339,934,837.75/13,188,892.80
  6. Step 6: Final answer
    x = 19,783,339.20

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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.