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Finding the Fourth Proportional to 630,658,716.48, 870,182,805.60 and 352,157,388.48

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Solution

The fourth proportional to 630,658,716.48, 870,182,805.60 and 352,157,388.48 is: 485,906,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,658,716.48 : 870,182,805.60 = 352,157,388.48 : x
  2. Step 2: Convert to fraction form
    630,658,716.48/870,182,805.60 = 352,157,388.48/x
  3. Step 3: Cross multiply
    630,658,716.48x = 870,182,805.60 × 352,157,388.48
  4. Step 4: Simplify right side
    630,658,716.48x = 306,441,304,320,295,552
  5. Step 5: Solve for x
    x = 306,441,304,320,295,552/630,658,716.48
  6. Step 6: Final answer
    x = 485,906,713.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.