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Finding the Fourth Proportional to 8,492,597.70, 12,738,896.55 and 5,125,071.30

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Solution

The fourth proportional to 8,492,597.70, 12,738,896.55 and 5,125,071.30 is: 7,687,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492,597.70 : 12,738,896.55 = 5,125,071.30 : x
  2. Step 2: Convert to fraction form
    8,492,597.70/12,738,896.55 = 5,125,071.30/x
  3. Step 3: Cross multiply
    8,492,597.70x = 12,738,896.55 × 5,125,071.30
  4. Step 4: Simplify right side
    8,492,597.70x = 65,287,753,102,074.02
  5. Step 5: Solve for x
    x = 65,287,753,102,074.02/8,492,597.70
  6. Step 6: Final answer
    x = 7,687,606.95

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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.