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Finding the Fourth Proportional to 667,872,138.90, 933,109,964.70 and 667,872,138.90

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Solution

The fourth proportional to 667,872,138.90, 933,109,964.70 and 667,872,138.90 is: 933,109,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,872,138.90 : 933,109,964.70 = 667,872,138.90 : x
  2. Step 2: Convert to fraction form
    667,872,138.90/933,109,964.70 = 667,872,138.90/x
  3. Step 3: Cross multiply
    667,872,138.90x = 933,109,964.70 × 667,872,138.90
  4. Step 4: Simplify right side
    667,872,138.90x = 623,198,147,953,092,480
  5. Step 5: Solve for x
    x = 623,198,147,953,092,480/667,872,138.90
  6. Step 6: Final answer
    x = 933,109,964.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.