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Finding the Fourth Proportional to 338,455.53, 507,708.81 and 113,816.61

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Solution

The fourth proportional to 338,455.53, 507,708.81 and 113,816.61 is: 170,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,455.53 : 507,708.81 = 113,816.61 : x
  2. Step 2: Convert to fraction form
    338,455.53/507,708.81 = 113,816.61/x
  3. Step 3: Cross multiply
    338,455.53x = 507,708.81 × 113,816.61
  4. Step 4: Simplify right side
    338,455.53x = 57,785,695,621.33
  5. Step 5: Solve for x
    x = 57,785,695,621.33/338,455.53
  6. Step 6: Final answer
    x = 170,733.50

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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.