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Finding the Fourth Proportional to 492,766.80, 737,767.80 and 478,942.80

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Solution

The fourth proportional to 492,766.80, 737,767.80 and 478,942.80 is: 717,070.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,766.80 : 737,767.80 = 478,942.80 : x
  2. Step 2: Convert to fraction form
    492,766.80/737,767.80 = 478,942.80/x
  3. Step 3: Cross multiply
    492,766.80x = 737,767.80 × 478,942.80
  4. Step 4: Simplify right side
    492,766.80x = 353,348,575,881.84
  5. Step 5: Solve for x
    x = 353,348,575,881.84/492,766.80
  6. Step 6: Final answer
    x = 717,070.58

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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.