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Finding the Fourth Proportional to 1,191,914.07, 1,787,831.28 and 517,995.42

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Solution

The fourth proportional to 1,191,914.07, 1,787,831.28 and 517,995.42 is: 776,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,914.07 : 1,787,831.28 = 517,995.42 : x
  2. Step 2: Convert to fraction form
    1,191,914.07/1,787,831.28 = 517,995.42/x
  3. Step 3: Cross multiply
    1,191,914.07x = 1,787,831.28 × 517,995.42
  4. Step 4: Simplify right side
    1,191,914.07x = 926,088,414,772.74
  5. Step 5: Solve for x
    x = 926,088,414,772.74/1,191,914.07
  6. Step 6: Final answer
    x = 776,975.82

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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.