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Finding the Fourth Proportional to 367,925.80, 551,888.70 and 311,938.60

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Solution

The fourth proportional to 367,925.80, 551,888.70 and 311,938.60 is: 467,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,925.80 : 551,888.70 = 311,938.60 : x
  2. Step 2: Convert to fraction form
    367,925.80/551,888.70 = 311,938.60/x
  3. Step 3: Cross multiply
    367,925.80x = 551,888.70 × 311,938.60
  4. Step 4: Simplify right side
    367,925.80x = 172,155,388,433.82
  5. Step 5: Solve for x
    x = 172,155,388,433.82/367,925.80
  6. Step 6: Final answer
    x = 467,907.90

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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.