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Finding the Fourth Proportional to 7,169,723.52, 9,894,093.40 and 3,906,565.22

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Solution

The fourth proportional to 7,169,723.52, 9,894,093.40 and 3,906,565.22 is: 5,390,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169,723.52 : 9,894,093.40 = 3,906,565.22 : x
  2. Step 2: Convert to fraction form
    7,169,723.52/9,894,093.40 = 3,906,565.22/x
  3. Step 3: Cross multiply
    7,169,723.52x = 9,894,093.40 × 3,906,565.22
  4. Step 4: Simplify right side
    7,169,723.52x = 38,651,921,159,871.55
  5. Step 5: Solve for x
    x = 38,651,921,159,871.55/7,169,723.52
  6. Step 6: Final answer
    x = 5,390,991.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.