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Finding the Fourth Proportional to 93,321.87, 128,778.63 and 53,030.04

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Solution

The fourth proportional to 93,321.87, 128,778.63 and 53,030.04 is: 73,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.87 : 128,778.63 = 53,030.04 : x
  2. Step 2: Convert to fraction form
    93,321.87/128,778.63 = 53,030.04/x
  3. Step 3: Cross multiply
    93,321.87x = 128,778.63 × 53,030.04
  4. Step 4: Simplify right side
    93,321.87x = 6,829,135,900.05
  5. Step 5: Solve for x
    x = 6,829,135,900.05/93,321.87
  6. Step 6: Final answer
    x = 73,178.30

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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.