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Finding the Fourth Proportional to 18,703.71, 25,814.70 and 11,536.02

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Solution

The fourth proportional to 18,703.71, 25,814.70 and 11,536.02 is: 15,921.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.71 : 25,814.70 = 11,536.02 : x
  2. Step 2: Convert to fraction form
    18,703.71/25,814.70 = 11,536.02/x
  3. Step 3: Cross multiply
    18,703.71x = 25,814.70 × 11,536.02
  4. Step 4: Simplify right side
    18,703.71x = 297,798,895.49
  5. Step 5: Solve for x
    x = 297,798,895.49/18,703.71
  6. Step 6: Final answer
    x = 15,921.92

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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.