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Finding the Fourth Proportional to 111,206.60, 166,809.90 and 105,763.40

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Solution

The fourth proportional to 111,206.60, 166,809.90 and 105,763.40 is: 158,645.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,206.60 : 166,809.90 = 105,763.40 : x
  2. Step 2: Convert to fraction form
    111,206.60/166,809.90 = 105,763.40/x
  3. Step 3: Cross multiply
    111,206.60x = 166,809.90 × 105,763.40
  4. Step 4: Simplify right side
    111,206.60x = 17,642,382,177.66
  5. Step 5: Solve for x
    x = 17,642,382,177.66/111,206.60
  6. Step 6: Final answer
    x = 158,645.10

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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.