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Finding the Fourth Proportional to 18,323.79, 25,302.61 and 11,529.14

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Solution

The fourth proportional to 18,323.79, 25,302.61 and 11,529.14 is: 15,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.79 : 25,302.61 = 11,529.14 : x
  2. Step 2: Convert to fraction form
    18,323.79/25,302.61 = 11,529.14/x
  3. Step 3: Cross multiply
    18,323.79x = 25,302.61 × 11,529.14
  4. Step 4: Simplify right side
    18,323.79x = 291,717,333.06
  5. Step 5: Solve for x
    x = 291,717,333.06/18,323.79
  6. Step 6: Final answer
    x = 15,920.14

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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.