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Finding the Fourth Proportional to 33,988.76, 50,985.30 and 9,028.40

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Solution

The fourth proportional to 33,988.76, 50,985.30 and 9,028.40 is: 13,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,988.76 : 50,985.30 = 9,028.40 : x
  2. Step 2: Convert to fraction form
    33,988.76/50,985.30 = 9,028.40/x
  3. Step 3: Cross multiply
    33,988.76x = 50,985.30 × 9,028.40
  4. Step 4: Simplify right side
    33,988.76x = 460,315,682.52
  5. Step 5: Solve for x
    x = 460,315,682.52/33,988.76
  6. Step 6: Final answer
    x = 13,543.17

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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.