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Finding the Fourth Proportional to 98,915.28, 136,512.86 and 56,480.19

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Solution

The fourth proportional to 98,915.28, 136,512.86 and 56,480.19 is: 77,948.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,915.28 : 136,512.86 = 56,480.19 : x
  2. Step 2: Convert to fraction form
    98,915.28/136,512.86 = 56,480.19/x
  3. Step 3: Cross multiply
    98,915.28x = 136,512.86 × 56,480.19
  4. Step 4: Simplify right side
    98,915.28x = 7,710,271,987.84
  5. Step 5: Solve for x
    x = 7,710,271,987.84/98,915.28
  6. Step 6: Final answer
    x = 77,948.24

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