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Finding the Fourth Proportional to 612,860.40, 919,290.48 and 192,170.16

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Solution

The fourth proportional to 612,860.40, 919,290.48 and 192,170.16 is: 288,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,860.40 : 919,290.48 = 192,170.16 : x
  2. Step 2: Convert to fraction form
    612,860.40/919,290.48 = 192,170.16/x
  3. Step 3: Cross multiply
    612,860.40x = 919,290.48 × 192,170.16
  4. Step 4: Simplify right side
    612,860.40x = 176,660,198,628.08
  5. Step 5: Solve for x
    x = 176,660,198,628.08/612,860.40
  6. Step 6: Final answer
    x = 288,255.20

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Similar ratio
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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.