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Finding the Fourth Proportional to 368,616.11, 553,020.74 and 115,886.39

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Solution

The fourth proportional to 368,616.11, 553,020.74 and 115,886.39 is: 173,859.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,616.11 : 553,020.74 = 115,886.39 : x
  2. Step 2: Convert to fraction form
    368,616.11/553,020.74 = 115,886.39/x
  3. Step 3: Cross multiply
    368,616.11x = 553,020.74 × 115,886.39
  4. Step 4: Simplify right side
    368,616.11x = 64,087,575,883.02
  5. Step 5: Solve for x
    x = 64,087,575,883.02/368,616.11
  6. Step 6: Final answer
    x = 173,859.94

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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.