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Finding the Fourth Proportional to 439,478.80, 659,218.20 and 107,054.80

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Solution

The fourth proportional to 439,478.80, 659,218.20 and 107,054.80 is: 160,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,478.80 : 659,218.20 = 107,054.80 : x
  2. Step 2: Convert to fraction form
    439,478.80/659,218.20 = 107,054.80/x
  3. Step 3: Cross multiply
    439,478.80x = 659,218.20 × 107,054.80
  4. Step 4: Simplify right side
    439,478.80x = 70,572,472,557.36
  5. Step 5: Solve for x
    x = 70,572,472,557.36/439,478.80
  6. Step 6: Final answer
    x = 160,582.20

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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.