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Finding the Fourth Proportional to 18,505.51, 25,537.76 and 10,122.01

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Solution

The fourth proportional to 18,505.51, 25,537.76 and 10,122.01 is: 13,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.51 : 25,537.76 = 10,122.01 : x
  2. Step 2: Convert to fraction form
    18,505.51/25,537.76 = 10,122.01/x
  3. Step 3: Cross multiply
    18,505.51x = 25,537.76 × 10,122.01
  4. Step 4: Simplify right side
    18,505.51x = 258,493,411.49
  5. Step 5: Solve for x
    x = 258,493,411.49/18,505.51
  6. Step 6: Final answer
    x = 13,968.46

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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.