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Finding the Fourth Proportional to 74,915.20, 112,445.60 and 58,454.40

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Solution

The fourth proportional to 74,915.20, 112,445.60 and 58,454.40 is: 87,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,915.20 : 112,445.60 = 58,454.40 : x
  2. Step 2: Convert to fraction form
    74,915.20/112,445.60 = 58,454.40/x
  3. Step 3: Cross multiply
    74,915.20x = 112,445.60 × 58,454.40
  4. Step 4: Simplify right side
    74,915.20x = 6,572,940,080.64
  5. Step 5: Solve for x
    x = 6,572,940,080.64/74,915.20
  6. Step 6: Final answer
    x = 87,738.40

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