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Finding the Fourth Proportional to 7,193,458.32, 9,926,856.65 and 3,930,203.01

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Solution

The fourth proportional to 7,193,458.32, 9,926,856.65 and 3,930,203.01 is: 5,423,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,193,458.32 : 9,926,856.65 = 3,930,203.01 : x
  2. Step 2: Convert to fraction form
    7,193,458.32/9,926,856.65 = 3,930,203.01/x
  3. Step 3: Cross multiply
    7,193,458.32x = 9,926,856.65 × 3,930,203.01
  4. Step 4: Simplify right side
    7,193,458.32x = 39,014,561,885,668.52
  5. Step 5: Solve for x
    x = 39,014,561,885,668.52/7,193,458.32
  6. Step 6: Final answer
    x = 5,423,616.87

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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.