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Finding the Fourth Proportional to 93,171.60, 128,593.62 and 54,928.98

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Solution

The fourth proportional to 93,171.60, 128,593.62 and 54,928.98 is: 75,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,171.60 : 128,593.62 = 54,928.98 : x
  2. Step 2: Convert to fraction form
    93,171.60/128,593.62 = 54,928.98/x
  3. Step 3: Cross multiply
    93,171.60x = 128,593.62 × 54,928.98
  4. Step 4: Simplify right side
    93,171.60x = 7,063,516,381.11
  5. Step 5: Solve for x
    x = 7,063,516,381.11/93,171.60
  6. Step 6: Final answer
    x = 75,811.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.