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Finding the Fourth Proportional to 28,066,745.70, 42,100,118.55 and 28,066,745.70

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Solution

The fourth proportional to 28,066,745.70, 42,100,118.55 and 28,066,745.70 is: 42,100,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066,745.70 : 42,100,118.55 = 28,066,745.70 : x
  2. Step 2: Convert to fraction form
    28,066,745.70/42,100,118.55 = 28,066,745.70/x
  3. Step 3: Cross multiply
    28,066,745.70x = 42,100,118.55 × 28,066,745.70
  4. Step 4: Simplify right side
    28,066,745.70x = 1,181,613,321,282,702.50
  5. Step 5: Solve for x
    x = 1,181,613,321,282,702.50/28,066,745.70
  6. Step 6: Final answer
    x = 42,100,118.55

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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.