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Finding the Fourth Proportional to 644,086.40, 966,124.80 and 194,806.40

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Solution

The fourth proportional to 644,086.40, 966,124.80 and 194,806.40 is: 292,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,086.40 : 966,124.80 = 194,806.40 : x
  2. Step 2: Convert to fraction form
    644,086.40/966,124.80 = 194,806.40/x
  3. Step 3: Cross multiply
    644,086.40x = 966,124.80 × 194,806.40
  4. Step 4: Simplify right side
    644,086.40x = 188,207,294,238.72
  5. Step 5: Solve for x
    x = 188,207,294,238.72/644,086.40
  6. Step 6: Final answer
    x = 292,208.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.