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Finding the Fourth Proportional to 326,259.53, 489,308.29 and 89,590.49

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Solution

The fourth proportional to 326,259.53, 489,308.29 and 89,590.49 is: 134,363.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,259.53 : 489,308.29 = 89,590.49 : x
  2. Step 2: Convert to fraction form
    326,259.53/489,308.29 = 89,590.49/x
  3. Step 3: Cross multiply
    326,259.53x = 489,308.29 × 89,590.49
  4. Step 4: Simplify right side
    326,259.53x = 43,837,369,462.16
  5. Step 5: Solve for x
    x = 43,837,369,462.16/326,259.53
  6. Step 6: Final answer
    x = 134,363.49

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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.