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Finding the Fourth Proportional to 14,508,411.19, 20,021,606.76 and 7,981,900.53

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Solution

The fourth proportional to 14,508,411.19, 20,021,606.76 and 7,981,900.53 is: 11,015,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,508,411.19 : 20,021,606.76 = 7,981,900.53 : x
  2. Step 2: Convert to fraction form
    14,508,411.19/20,021,606.76 = 7,981,900.53/x
  3. Step 3: Cross multiply
    14,508,411.19x = 20,021,606.76 × 7,981,900.53
  4. Step 4: Simplify right side
    14,508,411.19x = 159,810,473,676,568.25
  5. Step 5: Solve for x
    x = 159,810,473,676,568.25/14,508,411.19
  6. Step 6: Final answer
    x = 11,015,022.36

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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.