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Finding the Fourth Proportional to 93,098.57, 128,485.49 and 54,869.96

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Solution

The fourth proportional to 93,098.57, 128,485.49 and 54,869.96 is: 75,726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,098.57 : 128,485.49 = 54,869.96 : x
  2. Step 2: Convert to fraction form
    93,098.57/128,485.49 = 54,869.96/x
  3. Step 3: Cross multiply
    93,098.57x = 128,485.49 × 54,869.96
  4. Step 4: Simplify right side
    93,098.57x = 7,049,993,743.74
  5. Step 5: Solve for x
    x = 7,049,993,743.74/93,098.57
  6. Step 6: Final answer
    x = 75,726.13

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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.