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Finding the Fourth Proportional to 325,813.10, 488,719.65 and 314,926.70

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Solution

The fourth proportional to 325,813.10, 488,719.65 and 314,926.70 is: 472,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,813.10 : 488,719.65 = 314,926.70 : x
  2. Step 2: Convert to fraction form
    325,813.10/488,719.65 = 314,926.70/x
  3. Step 3: Cross multiply
    325,813.10x = 488,719.65 × 314,926.70
  4. Step 4: Simplify right side
    325,813.10x = 153,910,866,599.66
  5. Step 5: Solve for x
    x = 153,910,866,599.66/325,813.10
  6. Step 6: Final answer
    x = 472,390.05

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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.