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Finding the Fourth Proportional to 403,823.60, 605,079.30 and 336,901.40

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Solution

The fourth proportional to 403,823.60, 605,079.30 and 336,901.40 is: 504,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,823.60 : 605,079.30 = 336,901.40 : x
  2. Step 2: Convert to fraction form
    403,823.60/605,079.30 = 336,901.40/x
  3. Step 3: Cross multiply
    403,823.60x = 605,079.30 × 336,901.40
  4. Step 4: Simplify right side
    403,823.60x = 203,852,063,281.02
  5. Step 5: Solve for x
    x = 203,852,063,281.02/403,823.60
  6. Step 6: Final answer
    x = 504,804.73

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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.