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Finding the Fourth Proportional to 51,059.08, 70,467.86 and 28,703.08

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Solution

The fourth proportional to 51,059.08, 70,467.86 and 28,703.08 is: 39,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,059.08 : 70,467.86 = 28,703.08 : x
  2. Step 2: Convert to fraction form
    51,059.08/70,467.86 = 28,703.08/x
  3. Step 3: Cross multiply
    51,059.08x = 70,467.86 × 28,703.08
  4. Step 4: Simplify right side
    51,059.08x = 2,022,644,623.01
  5. Step 5: Solve for x
    x = 2,022,644,623.01/51,059.08
  6. Step 6: Final answer
    x = 39,613.81

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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.