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Finding the Fourth Proportional to 565,805.83, 780,796.47 and 311,157.01

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Solution

The fourth proportional to 565,805.83, 780,796.47 and 311,157.01 is: 429,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,805.83 : 780,796.47 = 311,157.01 : x
  2. Step 2: Convert to fraction form
    565,805.83/780,796.47 = 311,157.01/x
  3. Step 3: Cross multiply
    565,805.83x = 780,796.47 × 311,157.01
  4. Step 4: Simplify right side
    565,805.83x = 242,950,295,023.76
  5. Step 5: Solve for x
    x = 242,950,295,023.76/565,805.83
  6. Step 6: Final answer
    x = 429,388.11

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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.