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Finding the Fourth Proportional to 93,135.63, 128,551.89 and 57,355.62

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Solution

The fourth proportional to 93,135.63, 128,551.89 and 57,355.62 is: 79,165.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,135.63 : 128,551.89 = 57,355.62 : x
  2. Step 2: Convert to fraction form
    93,135.63/128,551.89 = 57,355.62/x
  3. Step 3: Cross multiply
    93,135.63x = 128,551.89 × 57,355.62
  4. Step 4: Simplify right side
    93,135.63x = 7,373,173,353.12
  5. Step 5: Solve for x
    x = 7,373,173,353.12/93,135.63
  6. Step 6: Final answer
    x = 79,165.98

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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.