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Finding the Fourth Proportional to 456,445.30, 684,684.15 and 140,901.70

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Solution

The fourth proportional to 456,445.30, 684,684.15 and 140,901.70 is: 211,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,445.30 : 684,684.15 = 140,901.70 : x
  2. Step 2: Convert to fraction form
    456,445.30/684,684.15 = 140,901.70/x
  3. Step 3: Cross multiply
    456,445.30x = 684,684.15 × 140,901.70
  4. Step 4: Simplify right side
    456,445.30x = 96,473,160,698.06
  5. Step 5: Solve for x
    x = 96,473,160,698.06/456,445.30
  6. Step 6: Final answer
    x = 211,357.55

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