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Finding the Fourth Proportional to 308,600,118.38, 425,869,278.31 and 167,471,308.13

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Solution

The fourth proportional to 308,600,118.38, 425,869,278.31 and 167,471,308.13 is: 231,111,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,600,118.38 : 425,869,278.31 = 167,471,308.13 : x
  2. Step 2: Convert to fraction form
    308,600,118.38/425,869,278.31 = 167,471,308.13/x
  3. Step 3: Cross multiply
    308,600,118.38x = 425,869,278.31 × 167,471,308.13
  4. Step 4: Simplify right side
    308,600,118.38x = 71,320,885,130,999,016
  5. Step 5: Solve for x
    x = 71,320,885,130,999,016/308,600,118.38
  6. Step 6: Final answer
    x = 231,111,010.28

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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.