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Finding the Fourth Proportional to 25,954.34, 35,779.65 and 18,489.38

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Solution

The fourth proportional to 25,954.34, 35,779.65 and 18,489.38 is: 25,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,954.34 : 35,779.65 = 18,489.38 : x
  2. Step 2: Convert to fraction form
    25,954.34/35,779.65 = 18,489.38/x
  3. Step 3: Cross multiply
    25,954.34x = 35,779.65 × 18,489.38
  4. Step 4: Simplify right side
    25,954.34x = 661,543,545.12
  5. Step 5: Solve for x
    x = 661,543,545.12/25,954.34
  6. Step 6: Final answer
    x = 25,488.74

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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.