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Finding the Fourth Proportional to 13,548.51, 18,697.86 and 7,579.85

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Solution

The fourth proportional to 13,548.51, 18,697.86 and 7,579.85 is: 10,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.51 : 18,697.86 = 7,579.85 : x
  2. Step 2: Convert to fraction form
    13,548.51/18,697.86 = 7,579.85/x
  3. Step 3: Cross multiply
    13,548.51x = 18,697.86 × 7,579.85
  4. Step 4: Simplify right side
    13,548.51x = 141,726,880.63
  5. Step 5: Solve for x
    x = 141,726,880.63/13,548.51
  6. Step 6: Final answer
    x = 10,460.70

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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.