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Finding the Fourth Proportional to 93,306.72, 128,766.72 and 53,027.28

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Solution

The fourth proportional to 93,306.72, 128,766.72 and 53,027.28 is: 73,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,306.72 : 128,766.72 = 53,027.28 : x
  2. Step 2: Convert to fraction form
    93,306.72/128,766.72 = 53,027.28/x
  3. Step 3: Cross multiply
    93,306.72x = 128,766.72 × 53,027.28
  4. Step 4: Simplify right side
    93,306.72x = 6,828,148,916.12
  5. Step 5: Solve for x
    x = 6,828,148,916.12/93,306.72
  6. Step 6: Final answer
    x = 73,179.61

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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.