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Finding the Fourth Proportional to 25,136.80, 37,680.40 and 14,048.80

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Solution

The fourth proportional to 25,136.80, 37,680.40 and 14,048.80 is: 21,059.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,136.80 : 37,680.40 = 14,048.80 : x
  2. Step 2: Convert to fraction form
    25,136.80/37,680.40 = 14,048.80/x
  3. Step 3: Cross multiply
    25,136.80x = 37,680.40 × 14,048.80
  4. Step 4: Simplify right side
    25,136.80x = 529,364,403.52
  5. Step 5: Solve for x
    x = 529,364,403.52/25,136.80
  6. Step 6: Final answer
    x = 21,059.34

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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.