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Finding the Fourth Proportional to 439,451.92, 606,448.32 and 258,171.40

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Solution

The fourth proportional to 439,451.92, 606,448.32 and 258,171.40 is: 356,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,451.92 : 606,448.32 = 258,171.40 : x
  2. Step 2: Convert to fraction form
    439,451.92/606,448.32 = 258,171.40/x
  3. Step 3: Cross multiply
    439,451.92x = 606,448.32 × 258,171.40
  4. Step 4: Simplify right side
    439,451.92x = 156,567,611,802.05
  5. Step 5: Solve for x
    x = 156,567,611,802.05/439,451.92
  6. Step 6: Final answer
    x = 356,279.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.