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Finding the Fourth Proportional to 19,653,872.70, 29,480,809.05 and 19,653,872.70

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Solution

The fourth proportional to 19,653,872.70, 29,480,809.05 and 19,653,872.70 is: 29,480,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,653,872.70 : 29,480,809.05 = 19,653,872.70 : x
  2. Step 2: Convert to fraction form
    19,653,872.70/29,480,809.05 = 19,653,872.70/x
  3. Step 3: Cross multiply
    19,653,872.70x = 29,480,809.05 × 19,653,872.70
  4. Step 4: Simplify right side
    19,653,872.70x = 579,412,068,161,707.88
  5. Step 5: Solve for x
    x = 579,412,068,161,707.88/19,653,872.70
  6. Step 6: Final answer
    x = 29,480,809.05

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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.