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Finding the Fourth Proportional to 325,869.30, 488,803.95 and 115,479.90

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Solution

The fourth proportional to 325,869.30, 488,803.95 and 115,479.90 is: 173,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,869.30 : 488,803.95 = 115,479.90 : x
  2. Step 2: Convert to fraction form
    325,869.30/488,803.95 = 115,479.90/x
  3. Step 3: Cross multiply
    325,869.30x = 488,803.95 × 115,479.90
  4. Step 4: Simplify right side
    325,869.30x = 56,447,031,265.61
  5. Step 5: Solve for x
    x = 56,447,031,265.61/325,869.30
  6. Step 6: Final answer
    x = 173,219.85

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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.