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Finding the Fourth Proportional to 93,456.65, 128,965.67 and 53,166.62

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Solution

The fourth proportional to 93,456.65, 128,965.67 and 53,166.62 is: 73,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,456.65 : 128,965.67 = 53,166.62 : x
  2. Step 2: Convert to fraction form
    93,456.65/128,965.67 = 53,166.62/x
  3. Step 3: Cross multiply
    93,456.65x = 128,965.67 × 53,166.62
  4. Step 4: Simplify right side
    93,456.65x = 6,856,668,769.94
  5. Step 5: Solve for x
    x = 6,856,668,769.94/93,456.65
  6. Step 6: Final answer
    x = 73,367.37

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1.5x scale

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.