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Finding the Fourth Proportional to 25,812.80, 38,632.80 and 22,702.40

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Solution

The fourth proportional to 25,812.80, 38,632.80 and 22,702.40 is: 33,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,812.80 : 38,632.80 = 22,702.40 : x
  2. Step 2: Convert to fraction form
    25,812.80/38,632.80 = 22,702.40/x
  3. Step 3: Cross multiply
    25,812.80x = 38,632.80 × 22,702.40
  4. Step 4: Simplify right side
    25,812.80x = 877,057,278.72
  5. Step 5: Solve for x
    x = 877,057,278.72/25,812.80
  6. Step 6: Final answer
    x = 33,977.61

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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.