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Finding the Fourth Proportional to 18,841.84, 25,987.38 and 13,804.24

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Solution

The fourth proportional to 18,841.84, 25,987.38 and 13,804.24 is: 19,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.84 : 25,987.38 = 13,804.24 : x
  2. Step 2: Convert to fraction form
    18,841.84/25,987.38 = 13,804.24/x
  3. Step 3: Cross multiply
    18,841.84x = 25,987.38 × 13,804.24
  4. Step 4: Simplify right side
    18,841.84x = 358,736,030.49
  5. Step 5: Solve for x
    x = 358,736,030.49/18,841.84
  6. Step 6: Final answer
    x = 19,039.33

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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.