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Finding the Fourth Proportional to 18,354.99, 25,329.08 and 10,397.06

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Solution

The fourth proportional to 18,354.99, 25,329.08 and 10,397.06 is: 14,347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.99 : 25,329.08 = 10,397.06 : x
  2. Step 2: Convert to fraction form
    18,354.99/25,329.08 = 10,397.06/x
  3. Step 3: Cross multiply
    18,354.99x = 25,329.08 × 10,397.06
  4. Step 4: Simplify right side
    18,354.99x = 263,347,785.87
  5. Step 5: Solve for x
    x = 263,347,785.87/18,354.99
  6. Step 6: Final answer
    x = 14,347.48

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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.