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Finding the Fourth Proportional to 321,178.66, 443,209.07 and 177,930.16

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Solution

The fourth proportional to 321,178.66, 443,209.07 and 177,930.16 is: 245,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,178.66 : 443,209.07 = 177,930.16 : x
  2. Step 2: Convert to fraction form
    321,178.66/443,209.07 = 177,930.16/x
  3. Step 3: Cross multiply
    321,178.66x = 443,209.07 × 177,930.16
  4. Step 4: Simplify right side
    321,178.66x = 78,860,260,075.35
  5. Step 5: Solve for x
    x = 78,860,260,075.35/321,178.66
  6. Step 6: Final answer
    x = 245,533.94

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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.