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Finding the Fourth Proportional to 353,039.21, 487,199.61 and 191,894.64

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Solution

The fourth proportional to 353,039.21, 487,199.61 and 191,894.64 is: 264,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,039.21 : 487,199.61 = 191,894.64 : x
  2. Step 2: Convert to fraction form
    353,039.21/487,199.61 = 191,894.64/x
  3. Step 3: Cross multiply
    353,039.21x = 487,199.61 × 191,894.64
  4. Step 4: Simplify right side
    353,039.21x = 93,490,995,118.48
  5. Step 5: Solve for x
    x = 93,490,995,118.48/353,039.21
  6. Step 6: Final answer
    x = 264,817.60

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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.