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Finding the Fourth Proportional to 467,999.10, 701,998.65 and 390,239.10

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Solution

The fourth proportional to 467,999.10, 701,998.65 and 390,239.10 is: 585,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,999.10 : 701,998.65 = 390,239.10 : x
  2. Step 2: Convert to fraction form
    467,999.10/701,998.65 = 390,239.10/x
  3. Step 3: Cross multiply
    467,999.10x = 701,998.65 × 390,239.10
  4. Step 4: Simplify right side
    467,999.10x = 273,947,321,377.22
  5. Step 5: Solve for x
    x = 273,947,321,377.22/467,999.10
  6. Step 6: Final answer
    x = 585,358.65

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Similar ratio
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1.5x scale

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.