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Finding the Fourth Proportional to 43,624,828.80, 65,436,628.80 and 19,690,262.40

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Solution

The fourth proportional to 43,624,828.80, 65,436,628.80 and 19,690,262.40 is: 29,535,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,624,828.80 : 65,436,628.80 = 19,690,262.40 : x
  2. Step 2: Convert to fraction form
    43,624,828.80/65,436,628.80 = 19,690,262.40/x
  3. Step 3: Cross multiply
    43,624,828.80x = 65,436,628.80 × 19,690,262.40
  4. Step 4: Simplify right side
    43,624,828.80x = 1,288,464,391,643,397
  5. Step 5: Solve for x
    x = 1,288,464,391,643,397/43,624,828.80
  6. Step 6: Final answer
    x = 29,535,116.29

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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.