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Finding the Fourth Proportional to 921,848,311.43, 1,382,772,467.15 and 921,848,311.43

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Solution

The fourth proportional to 921,848,311.43, 1,382,772,467.15 and 921,848,311.43 is: 1,382,772,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,848,311.43 : 1,382,772,467.15 = 921,848,311.43 : x
  2. Step 2: Convert to fraction form
    921,848,311.43/1,382,772,467.15 = 921,848,311.43/x
  3. Step 3: Cross multiply
    921,848,311.43x = 1,382,772,467.15 × 921,848,311.43
  4. Step 4: Simplify right side
    921,848,311.43x = 1,274,706,463,922,599,424
  5. Step 5: Solve for x
    x = 1,274,706,463,922,599,424/921,848,311.43
  6. Step 6: Final answer
    x = 1,382,772,467.15

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Double scale
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1.5x scale

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.