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Finding the Fourth Proportional to 91,727.60, 128,593.60 and 91,727.60

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Solution

The fourth proportional to 91,727.60, 128,593.60 and 91,727.60 is: 128,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,727.60 : 128,593.60 = 91,727.60 : x
  2. Step 2: Convert to fraction form
    91,727.60/128,593.60 = 91,727.60/x
  3. Step 3: Cross multiply
    91,727.60x = 128,593.60 × 91,727.60
  4. Step 4: Simplify right side
    91,727.60x = 11,795,582,303.36
  5. Step 5: Solve for x
    x = 11,795,582,303.36/91,727.60
  6. Step 6: Final answer
    x = 128,593.60

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.