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Finding the Fourth Proportional to 35,476.51, 48,964.68 and 20,379.53

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Solution

The fourth proportional to 35,476.51, 48,964.68 and 20,379.53 is: 28,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,476.51 : 48,964.68 = 20,379.53 : x
  2. Step 2: Convert to fraction form
    35,476.51/48,964.68 = 20,379.53/x
  3. Step 3: Cross multiply
    35,476.51x = 48,964.68 × 20,379.53
  4. Step 4: Simplify right side
    35,476.51x = 997,877,165.00
  5. Step 5: Solve for x
    x = 997,877,165.00/35,476.51
  6. Step 6: Final answer
    x = 28,127.83

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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.