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Finding the Fourth Proportional to 91,509.55, 137,269.79 and 35,358.32

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Solution

The fourth proportional to 91,509.55, 137,269.79 and 35,358.32 is: 53,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,509.55 : 137,269.79 = 35,358.32 : x
  2. Step 2: Convert to fraction form
    91,509.55/137,269.79 = 35,358.32/x
  3. Step 3: Cross multiply
    91,509.55x = 137,269.79 × 35,358.32
  4. Step 4: Simplify right side
    91,509.55x = 4,853,629,460.13
  5. Step 5: Solve for x
    x = 4,853,629,460.13/91,509.55
  6. Step 6: Final answer
    x = 53,039.60

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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.