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Finding the Fourth Proportional to 18,893.66, 26,075.79 and 10,830.51

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Solution

The fourth proportional to 18,893.66, 26,075.79 and 10,830.51 is: 14,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.66 : 26,075.79 = 10,830.51 : x
  2. Step 2: Convert to fraction form
    18,893.66/26,075.79 = 10,830.51/x
  3. Step 3: Cross multiply
    18,893.66x = 26,075.79 × 10,830.51
  4. Step 4: Simplify right side
    18,893.66x = 282,414,104.35
  5. Step 5: Solve for x
    x = 282,414,104.35/18,893.66
  6. Step 6: Final answer
    x = 14,947.56

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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.