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Finding the Fourth Proportional to 399,060.48, 598,616.64 and 118,554.24

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Solution

The fourth proportional to 399,060.48, 598,616.64 and 118,554.24 is: 177,839.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,060.48 : 598,616.64 = 118,554.24 : x
  2. Step 2: Convert to fraction form
    399,060.48/598,616.64 = 118,554.24/x
  3. Step 3: Cross multiply
    399,060.48x = 598,616.64 × 118,554.24
  4. Step 4: Simplify right side
    399,060.48x = 70,968,540,806.55
  5. Step 5: Solve for x
    x = 70,968,540,806.55/399,060.48
  6. Step 6: Final answer
    x = 177,839.06

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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.