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Finding the Fourth Proportional to 35,791.76, 49,378.46 and 20,681.63

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Solution

The fourth proportional to 35,791.76, 49,378.46 and 20,681.63 is: 28,532.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,791.76 : 49,378.46 = 20,681.63 : x
  2. Step 2: Convert to fraction form
    35,791.76/49,378.46 = 20,681.63/x
  3. Step 3: Cross multiply
    35,791.76x = 49,378.46 × 20,681.63
  4. Step 4: Simplify right side
    35,791.76x = 1,021,226,936.28
  5. Step 5: Solve for x
    x = 1,021,226,936.28/35,791.76
  6. Step 6: Final answer
    x = 28,532.46

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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.