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Finding the Fourth Proportional to 338,358.34, 507,537.54 and 113,718.79

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Solution

The fourth proportional to 338,358.34, 507,537.54 and 113,718.79 is: 170,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,358.34 : 507,537.54 = 113,718.79 : x
  2. Step 2: Convert to fraction form
    338,358.34/507,537.54 = 113,718.79/x
  3. Step 3: Cross multiply
    338,358.34x = 507,537.54 × 113,718.79
  4. Step 4: Simplify right side
    338,358.34x = 57,716,554,928.38
  5. Step 5: Solve for x
    x = 57,716,554,928.38/338,358.34
  6. Step 6: Final answer
    x = 170,578.20

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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.