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Finding the Fourth Proportional to 491,445.40, 737,556.90 and 192,069.40

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Solution

The fourth proportional to 491,445.40, 737,556.90 and 192,069.40 is: 288,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,445.40 : 737,556.90 = 192,069.40 : x
  2. Step 2: Convert to fraction form
    491,445.40/737,556.90 = 192,069.40/x
  3. Step 3: Cross multiply
    491,445.40x = 737,556.90 × 192,069.40
  4. Step 4: Simplify right side
    491,445.40x = 141,662,111,248.86
  5. Step 5: Solve for x
    x = 141,662,111,248.86/491,445.40
  6. Step 6: Final answer
    x = 288,256.05

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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.