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Finding the Fourth Proportional to 56,851.50, 78,455.08 and 31,700.46

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Solution

The fourth proportional to 56,851.50, 78,455.08 and 31,700.46 is: 43,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,851.50 : 78,455.08 = 31,700.46 : x
  2. Step 2: Convert to fraction form
    56,851.50/78,455.08 = 31,700.46/x
  3. Step 3: Cross multiply
    56,851.50x = 78,455.08 × 31,700.46
  4. Step 4: Simplify right side
    56,851.50x = 2,487,062,125.34
  5. Step 5: Solve for x
    x = 2,487,062,125.34/56,851.50
  6. Step 6: Final answer
    x = 43,746.64

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