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Finding the Fourth Proportional to 35,988.76, 53,972.70 and 13,800.52

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Solution

The fourth proportional to 35,988.76, 53,972.70 and 13,800.52 is: 20,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,988.76 : 53,972.70 = 13,800.52 : x
  2. Step 2: Convert to fraction form
    35,988.76/53,972.70 = 13,800.52/x
  3. Step 3: Cross multiply
    35,988.76x = 53,972.70 × 13,800.52
  4. Step 4: Simplify right side
    35,988.76x = 744,851,325.80
  5. Step 5: Solve for x
    x = 744,851,325.80/35,988.76
  6. Step 6: Final answer
    x = 20,696.78

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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.