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Finding the Fourth Proportional to 111,039.60, 166,559.40 and 64,412.40

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Solution

The fourth proportional to 111,039.60, 166,559.40 and 64,412.40 is: 96,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,039.60 : 166,559.40 = 64,412.40 : x
  2. Step 2: Convert to fraction form
    111,039.60/166,559.40 = 64,412.40/x
  3. Step 3: Cross multiply
    111,039.60x = 166,559.40 × 64,412.40
  4. Step 4: Simplify right side
    111,039.60x = 10,728,490,696.56
  5. Step 5: Solve for x
    x = 10,728,490,696.56/111,039.60
  6. Step 6: Final answer
    x = 96,618.60

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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.