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Finding the Fourth Proportional to 556,861.71, 768,358 and 338,924.41

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Solution

The fourth proportional to 556,861.71, 768,358 and 338,924.41 is: 467,648.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,861.71 : 768,358 = 338,924.41 : x
  2. Step 2: Convert to fraction form
    556,861.71/768,358 = 338,924.41/x
  3. Step 3: Cross multiply
    556,861.71x = 768,358 × 338,924.41
  4. Step 4: Simplify right side
    556,861.71x = 260,415,281,818.78
  5. Step 5: Solve for x
    x = 260,415,281,818.78/556,861.71
  6. Step 6: Final answer
    x = 467,648.03

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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.