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Finding the Fourth Proportional to 35,129.98, 48,481.14 and 20,798.03

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Solution

The fourth proportional to 35,129.98, 48,481.14 and 20,798.03 is: 28,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,129.98 : 48,481.14 = 20,798.03 : x
  2. Step 2: Convert to fraction form
    35,129.98/48,481.14 = 20,798.03/x
  3. Step 3: Cross multiply
    35,129.98x = 48,481.14 × 20,798.03
  4. Step 4: Simplify right side
    35,129.98x = 1,008,312,403.35
  5. Step 5: Solve for x
    x = 1,008,312,403.35/35,129.98
  6. Step 6: Final answer
    x = 28,702.34

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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.