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Finding the Fourth Proportional to 42,786.04, 64,165.41 and 14,699.32

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Solution

The fourth proportional to 42,786.04, 64,165.41 and 14,699.32 is: 22,044.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,786.04 : 64,165.41 = 14,699.32 : x
  2. Step 2: Convert to fraction form
    42,786.04/64,165.41 = 14,699.32/x
  3. Step 3: Cross multiply
    42,786.04x = 64,165.41 × 14,699.32
  4. Step 4: Simplify right side
    42,786.04x = 943,187,821.02
  5. Step 5: Solve for x
    x = 943,187,821.02/42,786.04
  6. Step 6: Final answer
    x = 22,044.29

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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.