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Finding the Fourth Proportional to 47,792.70, 65,779.80 and 42,090.18

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Solution

The fourth proportional to 47,792.70, 65,779.80 and 42,090.18 is: 57,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,792.70 : 65,779.80 = 42,090.18 : x
  2. Step 2: Convert to fraction form
    47,792.70/65,779.80 = 42,090.18/x
  3. Step 3: Cross multiply
    47,792.70x = 65,779.80 × 42,090.18
  4. Step 4: Simplify right side
    47,792.70x = 2,768,683,622.36
  5. Step 5: Solve for x
    x = 2,768,683,622.36/47,792.70
  6. Step 6: Final answer
    x = 57,931.10

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