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Finding the Fourth Proportional to 84,993.60, 127,357.20 and 53,762.88

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Solution

The fourth proportional to 84,993.60, 127,357.20 and 53,762.88 is: 80,560.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,993.60 : 127,357.20 = 53,762.88 : x
  2. Step 2: Convert to fraction form
    84,993.60/127,357.20 = 53,762.88/x
  3. Step 3: Cross multiply
    84,993.60x = 127,357.20 × 53,762.88
  4. Step 4: Simplify right side
    84,993.60x = 6,847,089,860.74
  5. Step 5: Solve for x
    x = 6,847,089,860.74/84,993.60
  6. Step 6: Final answer
    x = 80,560.06

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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.