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Finding the Fourth Proportional to 326,362.14, 489,545.37 and 89,729.82

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Solution

The fourth proportional to 326,362.14, 489,545.37 and 89,729.82 is: 134,595.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,362.14 : 489,545.37 = 89,729.82 : x
  2. Step 2: Convert to fraction form
    326,362.14/489,545.37 = 89,729.82/x
  3. Step 3: Cross multiply
    326,362.14x = 489,545.37 × 89,729.82
  4. Step 4: Simplify right side
    326,362.14x = 43,926,817,931.93
  5. Step 5: Solve for x
    x = 43,926,817,931.93/326,362.14
  6. Step 6: Final answer
    x = 134,595.32

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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.