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Finding the Fourth Proportional to 93,302.68, 128,772.66 and 55,063

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Solution

The fourth proportional to 93,302.68, 128,772.66 and 55,063 is: 75,995.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,302.68 : 128,772.66 = 55,063 : x
  2. Step 2: Convert to fraction form
    93,302.68/128,772.66 = 55,063/x
  3. Step 3: Cross multiply
    93,302.68x = 128,772.66 × 55,063
  4. Step 4: Simplify right side
    93,302.68x = 7,090,608,977.58
  5. Step 5: Solve for x
    x = 7,090,608,977.58/93,302.68
  6. Step 6: Final answer
    x = 75,995.77

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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.