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Finding the Fourth Proportional to 399,043.26, 598,664.52 and 118,560.51

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Solution

The fourth proportional to 399,043.26, 598,664.52 and 118,560.51 is: 177,870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,043.26 : 598,664.52 = 118,560.51 : x
  2. Step 2: Convert to fraction form
    399,043.26/598,664.52 = 118,560.51/x
  3. Step 3: Cross multiply
    399,043.26x = 598,664.52 × 118,560.51
  4. Step 4: Simplify right side
    399,043.26x = 70,977,970,810.11
  5. Step 5: Solve for x
    x = 70,977,970,810.11/399,043.26
  6. Step 6: Final answer
    x = 177,870.37

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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.