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Finding the Fourth Proportional to 25,603.86, 38,405.79 and 8,075.05

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Solution

The fourth proportional to 25,603.86, 38,405.79 and 8,075.05 is: 12,112.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,603.86 : 38,405.79 = 8,075.05 : x
  2. Step 2: Convert to fraction form
    25,603.86/38,405.79 = 8,075.05/x
  3. Step 3: Cross multiply
    25,603.86x = 38,405.79 × 8,075.05
  4. Step 4: Simplify right side
    25,603.86x = 310,128,674.54
  5. Step 5: Solve for x
    x = 310,128,674.54/25,603.86
  6. Step 6: Final answer
    x = 12,112.58

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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.