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Finding the Fourth Proportional to 35,388.45, 48,845.70 and 21,053.70

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Solution

The fourth proportional to 35,388.45, 48,845.70 and 21,053.70 is: 29,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,388.45 : 48,845.70 = 21,053.70 : x
  2. Step 2: Convert to fraction form
    35,388.45/48,845.70 = 21,053.70/x
  3. Step 3: Cross multiply
    35,388.45x = 48,845.70 × 21,053.70
  4. Step 4: Simplify right side
    35,388.45x = 1,028,382,714.09
  5. Step 5: Solve for x
    x = 1,028,382,714.09/35,388.45
  6. Step 6: Final answer
    x = 29,059.84

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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.