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Finding the Fourth Proportional to 21,978,355.80, 32,967,533.70 and 11,228,813.40

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Solution

The fourth proportional to 21,978,355.80, 32,967,533.70 and 11,228,813.40 is: 16,843,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,355.80 : 32,967,533.70 = 11,228,813.40 : x
  2. Step 2: Convert to fraction form
    21,978,355.80/32,967,533.70 = 11,228,813.40/x
  3. Step 3: Cross multiply
    21,978,355.80x = 32,967,533.70 × 11,228,813.40
  4. Step 4: Simplify right side
    21,978,355.80x = 370,186,284,175,511.56
  5. Step 5: Solve for x
    x = 370,186,284,175,511.56/21,978,355.80
  6. Step 6: Final answer
    x = 16,843,220.10

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1.5x scale

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.