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Finding the Fourth Proportional to 7,398,502.80, 11,085,944.40 and 6,193,903.20

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Solution

The fourth proportional to 7,398,502.80, 11,085,944.40 and 6,193,903.20 is: 9,280,967.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,398,502.80 : 11,085,944.40 = 6,193,903.20 : x
  2. Step 2: Convert to fraction form
    7,398,502.80/11,085,944.40 = 6,193,903.20/x
  3. Step 3: Cross multiply
    7,398,502.80x = 11,085,944.40 × 6,193,903.20
  4. Step 4: Simplify right side
    7,398,502.80x = 68,665,266,494,182.09
  5. Step 5: Solve for x
    x = 68,665,266,494,182.09/7,398,502.80
  6. Step 6: Final answer
    x = 9,280,967.83

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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.