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Finding the Fourth Proportional to 25,953.85, 38,929.14 and 9,313.42

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Solution

The fourth proportional to 25,953.85, 38,929.14 and 9,313.42 is: 13,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.85 : 38,929.14 = 9,313.42 : x
  2. Step 2: Convert to fraction form
    25,953.85/38,929.14 = 9,313.42/x
  3. Step 3: Cross multiply
    25,953.85x = 38,929.14 × 9,313.42
  4. Step 4: Simplify right side
    25,953.85x = 362,563,431.06
  5. Step 5: Solve for x
    x = 362,563,431.06/25,953.85
  6. Step 6: Final answer
    x = 13,969.54

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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.