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Finding the Fourth Proportional to 442,996.80, 611,123.04 and 321,950.40

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Solution

The fourth proportional to 442,996.80, 611,123.04 and 321,950.40 is: 444,137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,996.80 : 611,123.04 = 321,950.40 : x
  2. Step 2: Convert to fraction form
    442,996.80/611,123.04 = 321,950.40/x
  3. Step 3: Cross multiply
    442,996.80x = 611,123.04 × 321,950.40
  4. Step 4: Simplify right side
    442,996.80x = 196,751,307,177.22
  5. Step 5: Solve for x
    x = 196,751,307,177.22/442,996.80
  6. Step 6: Final answer
    x = 444,137.08

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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.