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Finding the Fourth Proportional to 215,907.20, 323,623.20 and 75,593.60

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Solution

The fourth proportional to 215,907.20, 323,623.20 and 75,593.60 is: 113,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,907.20 : 323,623.20 = 75,593.60 : x
  2. Step 2: Convert to fraction form
    215,907.20/323,623.20 = 75,593.60/x
  3. Step 3: Cross multiply
    215,907.20x = 323,623.20 × 75,593.60
  4. Step 4: Simplify right side
    215,907.20x = 24,463,842,731.52
  5. Step 5: Solve for x
    x = 24,463,842,731.52/215,907.20
  6. Step 6: Final answer
    x = 113,307.21

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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.