Home / 28,161,011.80-42,241,517.70-21,775,846.60

Finding the Fourth Proportional to 28,161,011.80, 42,241,517.70 and 21,775,846.60

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Solution

The fourth proportional to 28,161,011.80, 42,241,517.70 and 21,775,846.60 is: 32,663,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161,011.80 : 42,241,517.70 = 21,775,846.60 : x
  2. Step 2: Convert to fraction form
    28,161,011.80/42,241,517.70 = 21,775,846.60/x
  3. Step 3: Cross multiply
    28,161,011.80x = 42,241,517.70 × 21,775,846.60
  4. Step 4: Simplify right side
    28,161,011.80x = 919,844,809,586,385
  5. Step 5: Solve for x
    x = 919,844,809,586,385/28,161,011.80
  6. Step 6: Final answer
    x = 32,663,769.90

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Similar ratio
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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.