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Finding the Fourth Proportional to 19,872,003.20, 29,808,006.24 and 19,872,003.20

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Solution

The fourth proportional to 19,872,003.20, 29,808,006.24 and 19,872,003.20 is: 29,808,006.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872,003.20 : 29,808,006.24 = 19,872,003.20 : x
  2. Step 2: Convert to fraction form
    19,872,003.20/29,808,006.24 = 19,872,003.20/x
  3. Step 3: Cross multiply
    19,872,003.20x = 29,808,006.24 × 19,872,003.20
  4. Step 4: Simplify right side
    19,872,003.20x = 592,344,795,386,899.88
  5. Step 5: Solve for x
    x = 592,344,795,386,899.88/19,872,003.20
  6. Step 6: Final answer
    x = 29,808,006.24

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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.