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Finding the Fourth Proportional to 32,486.60, 48,739.80 and 13,756.88

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Solution

The fourth proportional to 32,486.60, 48,739.80 and 13,756.88 is: 20,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,486.60 : 48,739.80 = 13,756.88 : x
  2. Step 2: Convert to fraction form
    32,486.60/48,739.80 = 13,756.88/x
  3. Step 3: Cross multiply
    32,486.60x = 48,739.80 × 13,756.88
  4. Step 4: Simplify right side
    32,486.60x = 670,507,579.82
  5. Step 5: Solve for x
    x = 670,507,579.82/32,486.60
  6. Step 6: Final answer
    x = 20,639.51

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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.