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Finding the Fourth Proportional to 19,811,981.10, 29,717,971.65 and 19,811,981.10

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Solution

The fourth proportional to 19,811,981.10, 29,717,971.65 and 19,811,981.10 is: 29,717,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811,981.10 : 29,717,971.65 = 19,811,981.10 : x
  2. Step 2: Convert to fraction form
    19,811,981.10/29,717,971.65 = 19,811,981.10/x
  3. Step 3: Cross multiply
    19,811,981.10x = 29,717,971.65 × 19,811,981.10
  4. Step 4: Simplify right side
    19,811,981.10x = 588,771,892,660,135.88
  5. Step 5: Solve for x
    x = 588,771,892,660,135.88/19,811,981.10
  6. Step 6: Final answer
    x = 29,717,971.65

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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.