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Finding the Fourth Proportional to 91,607.44, 137,304.60 and 74,995.60

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Solution

The fourth proportional to 91,607.44, 137,304.60 and 74,995.60 is: 112,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,607.44 : 137,304.60 = 74,995.60 : x
  2. Step 2: Convert to fraction form
    91,607.44/137,304.60 = 74,995.60/x
  3. Step 3: Cross multiply
    91,607.44x = 137,304.60 × 74,995.60
  4. Step 4: Simplify right side
    91,607.44x = 10,297,240,859.76
  5. Step 5: Solve for x
    x = 10,297,240,859.76/91,607.44
  6. Step 6: Final answer
    x = 112,406.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.