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Finding the Fourth Proportional to 28,188,064.20, 42,282,096.30 and 28,188,064.20

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Solution

The fourth proportional to 28,188,064.20, 42,282,096.30 and 28,188,064.20 is: 42,282,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188,064.20 : 42,282,096.30 = 28,188,064.20 : x
  2. Step 2: Convert to fraction form
    28,188,064.20/42,282,096.30 = 28,188,064.20/x
  3. Step 3: Cross multiply
    28,188,064.20x = 42,282,096.30 × 28,188,064.20
  4. Step 4: Simplify right side
    28,188,064.20x = 1,191,850,445,014,982.25
  5. Step 5: Solve for x
    x = 1,191,850,445,014,982.25/28,188,064.20
  6. Step 6: Final answer
    x = 42,282,096.30

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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.