Home / 19,165,187.20-28,747,780.80-7,813,782.40

Finding the Fourth Proportional to 19,165,187.20, 28,747,780.80 and 7,813,782.40

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Solution

The fourth proportional to 19,165,187.20, 28,747,780.80 and 7,813,782.40 is: 11,720,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165,187.20 : 28,747,780.80 = 7,813,782.40 : x
  2. Step 2: Convert to fraction form
    19,165,187.20/28,747,780.80 = 7,813,782.40/x
  3. Step 3: Cross multiply
    19,165,187.20x = 28,747,780.80 × 7,813,782.40
  4. Step 4: Simplify right side
    19,165,187.20x = 224,628,903,654,097.94
  5. Step 5: Solve for x
    x = 224,628,903,654,097.94/19,165,187.20
  6. Step 6: Final answer
    x = 11,720,673.60

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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.