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Finding the Fourth Proportional to 338,600.93, 507,979.49 and 113,955.53

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Solution

The fourth proportional to 338,600.93, 507,979.49 and 113,955.53 is: 170,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,600.93 : 507,979.49 = 113,955.53 : x
  2. Step 2: Convert to fraction form
    338,600.93/507,979.49 = 113,955.53/x
  3. Step 3: Cross multiply
    338,600.93x = 507,979.49 × 113,955.53
  4. Step 4: Simplify right side
    338,600.93x = 57,887,068,902.40
  5. Step 5: Solve for x
    x = 57,887,068,902.40/338,600.93
  6. Step 6: Final answer
    x = 170,959.57

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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.