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Finding the Fourth Proportional to 326,058.30, 489,087.45 and 298,064.70

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Solution

The fourth proportional to 326,058.30, 489,087.45 and 298,064.70 is: 447,097.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,058.30 : 489,087.45 = 298,064.70 : x
  2. Step 2: Convert to fraction form
    326,058.30/489,087.45 = 298,064.70/x
  3. Step 3: Cross multiply
    326,058.30x = 489,087.45 × 298,064.70
  4. Step 4: Simplify right side
    326,058.30x = 145,779,704,058.02
  5. Step 5: Solve for x
    x = 145,779,704,058.02/326,058.30
  6. Step 6: Final answer
    x = 447,097.05

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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.