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Finding the Fourth Proportional to 25,415.70, 38,123.55 and 22,499.70

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Solution

The fourth proportional to 25,415.70, 38,123.55 and 22,499.70 is: 33,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.70 : 38,123.55 = 22,499.70 : x
  2. Step 2: Convert to fraction form
    25,415.70/38,123.55 = 22,499.70/x
  3. Step 3: Cross multiply
    25,415.70x = 38,123.55 × 22,499.70
  4. Step 4: Simplify right side
    25,415.70x = 857,768,437.94
  5. Step 5: Solve for x
    x = 857,768,437.94/25,415.70
  6. Step 6: Final answer
    x = 33,749.55

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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.