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Finding the Fourth Proportional to 338,570.60, 508,022.13 and 136,158.53

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Solution

The fourth proportional to 338,570.60, 508,022.13 and 136,158.53 is: 204,304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,570.60 : 508,022.13 = 136,158.53 : x
  2. Step 2: Convert to fraction form
    338,570.60/508,022.13 = 136,158.53/x
  3. Step 3: Cross multiply
    338,570.60x = 508,022.13 × 136,158.53
  4. Step 4: Simplify right side
    338,570.60x = 69,171,543,888.16
  5. Step 5: Solve for x
    x = 69,171,543,888.16/338,570.60
  6. Step 6: Final answer
    x = 204,304.64

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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.