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Finding the Fourth Proportional to 467,999.60, 701,999.40 and 390,239.60

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Solution

The fourth proportional to 467,999.60, 701,999.40 and 390,239.60 is: 585,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,999.60 : 701,999.40 = 390,239.60 : x
  2. Step 2: Convert to fraction form
    467,999.60/701,999.40 = 390,239.60/x
  3. Step 3: Cross multiply
    467,999.60x = 701,999.40 × 390,239.60
  4. Step 4: Simplify right side
    467,999.60x = 273,947,965,056.24
  5. Step 5: Solve for x
    x = 273,947,965,056.24/467,999.60
  6. Step 6: Final answer
    x = 585,359.40

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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.