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Finding the Fourth Proportional to 424,999.20, 637,345.67 and 140,637.26

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Solution

The fourth proportional to 424,999.20, 637,345.67 and 140,637.26 is: 210,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,999.20 : 637,345.67 = 140,637.26 : x
  2. Step 2: Convert to fraction form
    424,999.20/637,345.67 = 140,637.26/x
  3. Step 3: Cross multiply
    424,999.20x = 637,345.67 × 140,637.26
  4. Step 4: Simplify right side
    424,999.20x = 89,634,549,591.84
  5. Step 5: Solve for x
    x = 89,634,549,591.84/424,999.20
  6. Step 6: Final answer
    x = 210,905.22

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