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Finding the Fourth Proportional to 111,207.40, 166,811.10 and 103,771.60

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Solution

The fourth proportional to 111,207.40, 166,811.10 and 103,771.60 is: 155,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,207.40 : 166,811.10 = 103,771.60 : x
  2. Step 2: Convert to fraction form
    111,207.40/166,811.10 = 103,771.60/x
  3. Step 3: Cross multiply
    111,207.40x = 166,811.10 × 103,771.60
  4. Step 4: Simplify right side
    111,207.40x = 17,310,254,744.76
  5. Step 5: Solve for x
    x = 17,310,254,744.76/111,207.40
  6. Step 6: Final answer
    x = 155,657.40

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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.