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Finding the Fourth Proportional to 61,188.40, 91,782.60 and 58,855.60

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Solution

The fourth proportional to 61,188.40, 91,782.60 and 58,855.60 is: 88,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,188.40 : 91,782.60 = 58,855.60 : x
  2. Step 2: Convert to fraction form
    61,188.40/91,782.60 = 58,855.60/x
  3. Step 3: Cross multiply
    61,188.40x = 91,782.60 × 58,855.60
  4. Step 4: Simplify right side
    61,188.40x = 5,401,919,992.56
  5. Step 5: Solve for x
    x = 5,401,919,992.56/61,188.40
  6. Step 6: Final answer
    x = 88,283.40

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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.