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Finding the Fourth Proportional to 631,847,879.20, 946,071,207.60 and 631,847,879.20

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Solution

The fourth proportional to 631,847,879.20, 946,071,207.60 and 631,847,879.20 is: 946,071,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,847,879.20 : 946,071,207.60 = 631,847,879.20 : x
  2. Step 2: Convert to fraction form
    631,847,879.20/946,071,207.60 = 631,847,879.20/x
  3. Step 3: Cross multiply
    631,847,879.20x = 946,071,207.60 × 631,847,879.20
  4. Step 4: Simplify right side
    631,847,879.20x = 597,773,086,094,242,944
  5. Step 5: Solve for x
    x = 597,773,086,094,242,944/631,847,879.20
  6. Step 6: Final answer
    x = 946,071,207.60

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Double scale
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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.