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Finding the Fourth Proportional to 35,781.01, 49,368.90 and 19,861.48

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Solution

The fourth proportional to 35,781.01, 49,368.90 and 19,861.48 is: 27,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.01 : 49,368.90 = 19,861.48 : x
  2. Step 2: Convert to fraction form
    35,781.01/49,368.90 = 19,861.48/x
  3. Step 3: Cross multiply
    35,781.01x = 49,368.90 × 19,861.48
  4. Step 4: Simplify right side
    35,781.01x = 980,539,419.97
  5. Step 5: Solve for x
    x = 980,539,419.97/35,781.01
  6. Step 6: Final answer
    x = 27,403.91

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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.