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Finding the Fourth Proportional to 42,798.52, 64,173.46 and 35,821.99

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Solution

The fourth proportional to 42,798.52, 64,173.46 and 35,821.99 is: 53,712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,798.52 : 64,173.46 = 35,821.99 : x
  2. Step 2: Convert to fraction form
    42,798.52/64,173.46 = 35,821.99/x
  3. Step 3: Cross multiply
    42,798.52x = 64,173.46 × 35,821.99
  4. Step 4: Simplify right side
    42,798.52x = 2,298,821,042.39
  5. Step 5: Solve for x
    x = 2,298,821,042.39/42,798.52
  6. Step 6: Final answer
    x = 53,712.63

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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.