Home / 28,405,819.40-42,608,729.10-19,713,806.60

Finding the Fourth Proportional to 28,405,819.40, 42,608,729.10 and 19,713,806.60

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Solution

The fourth proportional to 28,405,819.40, 42,608,729.10 and 19,713,806.60 is: 29,570,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405,819.40 : 42,608,729.10 = 19,713,806.60 : x
  2. Step 2: Convert to fraction form
    28,405,819.40/42,608,729.10 = 19,713,806.60/x
  3. Step 3: Cross multiply
    28,405,819.40x = 42,608,729.10 × 19,713,806.60
  4. Step 4: Simplify right side
    28,405,819.40x = 839,980,244,949,192.12
  5. Step 5: Solve for x
    x = 839,980,244,949,192.12/28,405,819.40
  6. Step 6: Final answer
    x = 29,570,709.90

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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.