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Finding the Fourth Proportional to 7,427,276.55, 10,405,273.05 and 7,427,276.55

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Solution

The fourth proportional to 7,427,276.55, 10,405,273.05 and 7,427,276.55 is: 10,405,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427,276.55 : 10,405,273.05 = 7,427,276.55 : x
  2. Step 2: Convert to fraction form
    7,427,276.55/10,405,273.05 = 7,427,276.55/x
  3. Step 3: Cross multiply
    7,427,276.55x = 10,405,273.05 × 7,427,276.55
  4. Step 4: Simplify right side
    7,427,276.55x = 77,282,840,520,611.98
  5. Step 5: Solve for x
    x = 77,282,840,520,611.98/7,427,276.55
  6. Step 6: Final answer
    x = 10,405,273.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.