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Finding the Fourth Proportional to 326,054.80, 489,082.20 and 298,061.20

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Solution

The fourth proportional to 326,054.80, 489,082.20 and 298,061.20 is: 447,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,054.80 : 489,082.20 = 298,061.20 : x
  2. Step 2: Convert to fraction form
    326,054.80/489,082.20 = 298,061.20/x
  3. Step 3: Cross multiply
    326,054.80x = 489,082.20 × 298,061.20
  4. Step 4: Simplify right side
    326,054.80x = 145,776,427,430.64
  5. Step 5: Solve for x
    x = 145,776,427,430.64/326,054.80
  6. Step 6: Final answer
    x = 447,091.80

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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.