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Finding the Fourth Proportional to 37,707.70, 52,038.94 and 20,940.70

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Solution

The fourth proportional to 37,707.70, 52,038.94 and 20,940.70 is: 28,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,707.70 : 52,038.94 = 20,940.70 : x
  2. Step 2: Convert to fraction form
    37,707.70/52,038.94 = 20,940.70/x
  3. Step 3: Cross multiply
    37,707.70x = 52,038.94 × 20,940.70
  4. Step 4: Simplify right side
    37,707.70x = 1,089,731,830.86
  5. Step 5: Solve for x
    x = 1,089,731,830.86/37,707.70
  6. Step 6: Final answer
    x = 28,899.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.