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Finding the Fourth Proportional to 77,771.94, 116,676.42 and 25,181.40

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Solution

The fourth proportional to 77,771.94, 116,676.42 and 25,181.40 is: 37,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,771.94 : 116,676.42 = 25,181.40 : x
  2. Step 2: Convert to fraction form
    77,771.94/116,676.42 = 25,181.40/x
  3. Step 3: Cross multiply
    77,771.94x = 116,676.42 × 25,181.40
  4. Step 4: Simplify right side
    77,771.94x = 2,938,075,602.59
  5. Step 5: Solve for x
    x = 2,938,075,602.59/77,771.94
  6. Step 6: Final answer
    x = 37,778.09

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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.