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Finding the Fourth Proportional to 325,833.60, 488,750.40 and 314,947.20

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Solution

The fourth proportional to 325,833.60, 488,750.40 and 314,947.20 is: 472,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,833.60 : 488,750.40 = 314,947.20 : x
  2. Step 2: Convert to fraction form
    325,833.60/488,750.40 = 314,947.20/x
  3. Step 3: Cross multiply
    325,833.60x = 488,750.40 × 314,947.20
  4. Step 4: Simplify right side
    325,833.60x = 153,930,569,978.88
  5. Step 5: Solve for x
    x = 153,930,569,978.88/325,833.60
  6. Step 6: Final answer
    x = 472,420.80

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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.