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Finding the Fourth Proportional to 25,784.25, 38,676.39 and 7,316.25

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Solution

The fourth proportional to 25,784.25, 38,676.39 and 7,316.25 is: 10,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,784.25 : 38,676.39 = 7,316.25 : x
  2. Step 2: Convert to fraction form
    25,784.25/38,676.39 = 7,316.25/x
  3. Step 3: Cross multiply
    25,784.25x = 38,676.39 × 7,316.25
  4. Step 4: Simplify right side
    25,784.25x = 282,966,138.34
  5. Step 5: Solve for x
    x = 282,966,138.34/25,784.25
  6. Step 6: Final answer
    x = 10,974.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.