Home / 28,190,959.60-42,286,439.40-19,687,903.60

Finding the Fourth Proportional to 28,190,959.60, 42,286,439.40 and 19,687,903.60

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Solution

The fourth proportional to 28,190,959.60, 42,286,439.40 and 19,687,903.60 is: 29,531,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190,959.60 : 42,286,439.40 = 19,687,903.60 : x
  2. Step 2: Convert to fraction form
    28,190,959.60/42,286,439.40 = 19,687,903.60/x
  3. Step 3: Cross multiply
    28,190,959.60x = 42,286,439.40 × 19,687,903.60
  4. Step 4: Simplify right side
    28,190,959.60x = 832,531,342,494,441.88
  5. Step 5: Solve for x
    x = 832,531,342,494,441.88/28,190,959.60
  6. Step 6: Final answer
    x = 29,531,855.40

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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.