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Finding the Fourth Proportional to 25,890.67, 38,752.47 and 13,393.48

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Solution

The fourth proportional to 25,890.67, 38,752.47 and 13,393.48 is: 20,047.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,890.67 : 38,752.47 = 13,393.48 : x
  2. Step 2: Convert to fraction form
    25,890.67/38,752.47 = 13,393.48/x
  3. Step 3: Cross multiply
    25,890.67x = 38,752.47 × 13,393.48
  4. Step 4: Simplify right side
    25,890.67x = 519,030,364.93
  5. Step 5: Solve for x
    x = 519,030,364.93/25,890.67
  6. Step 6: Final answer
    x = 20,047.01

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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.