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Finding the Fourth Proportional to 25,935.84, 35,780.40 and 16,980.48

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Solution

The fourth proportional to 25,935.84, 35,780.40 and 16,980.48 is: 23,425.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,935.84 : 35,780.40 = 16,980.48 : x
  2. Step 2: Convert to fraction form
    25,935.84/35,780.40 = 16,980.48/x
  3. Step 3: Cross multiply
    25,935.84x = 35,780.40 × 16,980.48
  4. Step 4: Simplify right side
    25,935.84x = 607,568,366.59
  5. Step 5: Solve for x
    x = 607,568,366.59/25,935.84
  6. Step 6: Final answer
    x = 23,425.82

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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.