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Finding the Fourth Proportional to 326,055.70, 489,326.55 and 168,202.90

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Solution

The fourth proportional to 326,055.70, 489,326.55 and 168,202.90 is: 252,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,055.70 : 489,326.55 = 168,202.90 : x
  2. Step 2: Convert to fraction form
    326,055.70/489,326.55 = 168,202.90/x
  3. Step 3: Cross multiply
    326,055.70x = 489,326.55 × 168,202.90
  4. Step 4: Simplify right side
    326,055.70x = 82,306,144,757.00
  5. Step 5: Solve for x
    x = 82,306,144,757.00/326,055.70
  6. Step 6: Final answer
    x = 252,429.71

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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.