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Finding the Fourth Proportional to 228,270.51, 315,114.18 and 136,422.20

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Solution

The fourth proportional to 228,270.51, 315,114.18 and 136,422.20 is: 188,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,270.51 : 315,114.18 = 136,422.20 : x
  2. Step 2: Convert to fraction form
    228,270.51/315,114.18 = 136,422.20/x
  3. Step 3: Cross multiply
    228,270.51x = 315,114.18 × 136,422.20
  4. Step 4: Simplify right side
    228,270.51x = 42,988,568,111.23
  5. Step 5: Solve for x
    x = 42,988,568,111.23/228,270.51
  6. Step 6: Final answer
    x = 188,322.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.