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Finding the Fourth Proportional to 19,956,656.40, 29,878,997.40 and 19,396,784.40

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Solution

The fourth proportional to 19,956,656.40, 29,878,997.40 and 19,396,784.40 is: 29,040,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956,656.40 : 29,878,997.40 = 19,396,784.40 : x
  2. Step 2: Convert to fraction form
    19,956,656.40/29,878,997.40 = 19,396,784.40/x
  3. Step 3: Cross multiply
    19,956,656.40x = 29,878,997.40 × 19,396,784.40
  4. Step 4: Simplify right side
    19,956,656.40x = 579,556,470,655,960.50
  5. Step 5: Solve for x
    x = 579,556,470,655,960.50/19,956,656.40
  6. Step 6: Final answer
    x = 29,040,760.09

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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.