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Finding the Fourth Proportional to 386,127.56, 579,185.13 and 119,888.33

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Solution

The fourth proportional to 386,127.56, 579,185.13 and 119,888.33 is: 179,830.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,127.56 : 579,185.13 = 119,888.33 : x
  2. Step 2: Convert to fraction form
    386,127.56/579,185.13 = 119,888.33/x
  3. Step 3: Cross multiply
    386,127.56x = 579,185.13 × 119,888.33
  4. Step 4: Simplify right side
    386,127.56x = 69,437,539,894.08
  5. Step 5: Solve for x
    x = 69,437,539,894.08/386,127.56
  6. Step 6: Final answer
    x = 179,830.57

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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.