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Finding the Fourth Proportional to 57,302.54, 85,953.74 and 21,763.79

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Solution

The fourth proportional to 57,302.54, 85,953.74 and 21,763.79 is: 32,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,302.54 : 85,953.74 = 21,763.79 : x
  2. Step 2: Convert to fraction form
    57,302.54/85,953.74 = 21,763.79/x
  3. Step 3: Cross multiply
    57,302.54x = 85,953.74 × 21,763.79
  4. Step 4: Simplify right side
    57,302.54x = 1,870,679,038.26
  5. Step 5: Solve for x
    x = 1,870,679,038.26/57,302.54
  6. Step 6: Final answer
    x = 32,645.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.