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Finding the Fourth Proportional to 170,680.40, 255,583.20 and 126,065.60

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Solution

The fourth proportional to 170,680.40, 255,583.20 and 126,065.60 is: 188,775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,680.40 : 255,583.20 = 126,065.60 : x
  2. Step 2: Convert to fraction form
    170,680.40/255,583.20 = 126,065.60/x
  3. Step 3: Cross multiply
    170,680.40x = 255,583.20 × 126,065.60
  4. Step 4: Simplify right side
    170,680.40x = 32,220,249,457.92
  5. Step 5: Solve for x
    x = 32,220,249,457.92/170,680.40
  6. Step 6: Final answer
    x = 188,775.33

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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.