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Finding the Fourth Proportional to 93,309.10, 128,766.59 and 53,022.90

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Solution

The fourth proportional to 93,309.10, 128,766.59 and 53,022.90 is: 73,171.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,309.10 : 128,766.59 = 53,022.90 : x
  2. Step 2: Convert to fraction form
    93,309.10/128,766.59 = 53,022.90/x
  3. Step 3: Cross multiply
    93,309.10x = 128,766.59 × 53,022.90
  4. Step 4: Simplify right side
    93,309.10x = 6,827,578,157.47
  5. Step 5: Solve for x
    x = 6,827,578,157.47/93,309.10
  6. Step 6: Final answer
    x = 73,171.62

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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.