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Finding the Fourth Proportional to 13,751.93, 18,977.69 and 7,464.32

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Solution

The fourth proportional to 13,751.93, 18,977.69 and 7,464.32 is: 10,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.93 : 18,977.69 = 7,464.32 : x
  2. Step 2: Convert to fraction form
    13,751.93/18,977.69 = 7,464.32/x
  3. Step 3: Cross multiply
    13,751.93x = 18,977.69 × 7,464.32
  4. Step 4: Simplify right side
    13,751.93x = 141,655,418.81
  5. Step 5: Solve for x
    x = 141,655,418.81/13,751.93
  6. Step 6: Final answer
    x = 10,300.77

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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.