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Finding the Fourth Proportional to 8,079,904.20, 12,119,856.30 and 8,079,904.20

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Solution

The fourth proportional to 8,079,904.20, 12,119,856.30 and 8,079,904.20 is: 12,119,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079,904.20 : 12,119,856.30 = 8,079,904.20 : x
  2. Step 2: Convert to fraction form
    8,079,904.20/12,119,856.30 = 8,079,904.20/x
  3. Step 3: Cross multiply
    8,079,904.20x = 12,119,856.30 × 8,079,904.20
  4. Step 4: Simplify right side
    8,079,904.20x = 97,927,277,821,766.47
  5. Step 5: Solve for x
    x = 97,927,277,821,766.47/8,079,904.20
  6. Step 6: Final answer
    x = 12,119,856.30

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Double scale
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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.