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Finding the Fourth Proportional to 91,840.58, 137,629.31 and 52,316.08

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Solution

The fourth proportional to 91,840.58, 137,629.31 and 52,316.08 is: 78,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,840.58 : 137,629.31 = 52,316.08 : x
  2. Step 2: Convert to fraction form
    91,840.58/137,629.31 = 52,316.08/x
  3. Step 3: Cross multiply
    91,840.58x = 137,629.31 × 52,316.08
  4. Step 4: Simplify right side
    91,840.58x = 7,200,225,992.30
  5. Step 5: Solve for x
    x = 7,200,225,992.30/91,840.58
  6. Step 6: Final answer
    x = 78,399.18

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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.