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Finding the Fourth Proportional to 515,617.98, 711,638.31 and 300,758.07

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Solution

The fourth proportional to 515,617.98, 711,638.31 and 300,758.07 is: 415,096.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,617.98 : 711,638.31 = 300,758.07 : x
  2. Step 2: Convert to fraction form
    515,617.98/711,638.31 = 300,758.07/x
  3. Step 3: Cross multiply
    515,617.98x = 711,638.31 × 300,758.07
  4. Step 4: Simplify right side
    515,617.98x = 214,030,964,653.66
  5. Step 5: Solve for x
    x = 214,030,964,653.66/515,617.98
  6. Step 6: Final answer
    x = 415,096.01

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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.