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Finding the Fourth Proportional to 572,343.40, 789,794.35 and 317,674.54

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Solution

The fourth proportional to 572,343.40, 789,794.35 and 317,674.54 is: 438,368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,343.40 : 789,794.35 = 317,674.54 : x
  2. Step 2: Convert to fraction form
    572,343.40/789,794.35 = 317,674.54/x
  3. Step 3: Cross multiply
    572,343.40x = 789,794.35 × 317,674.54
  4. Step 4: Simplify right side
    572,343.40x = 250,897,552,881.88
  5. Step 5: Solve for x
    x = 250,897,552,881.88/572,343.40
  6. Step 6: Final answer
    x = 438,368.91

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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.