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Finding the Fourth Proportional to 386,127.93, 579,185.70 and 119,888.71

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Solution

The fourth proportional to 386,127.93, 579,185.70 and 119,888.71 is: 179,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,127.93 : 579,185.70 = 119,888.71 : x
  2. Step 2: Convert to fraction form
    386,127.93/579,185.70 = 119,888.71/x
  3. Step 3: Cross multiply
    386,127.93x = 579,185.70 × 119,888.71
  4. Step 4: Simplify right side
    386,127.93x = 69,437,824,525.90
  5. Step 5: Solve for x
    x = 69,437,824,525.90/386,127.93
  6. Step 6: Final answer
    x = 179,831.13

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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.