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Finding the Fourth Proportional to 619,978.57, 929,101.73 and 335,054.86

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Solution

The fourth proportional to 619,978.57, 929,101.73 and 335,054.86 is: 502,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,978.57 : 929,101.73 = 335,054.86 : x
  2. Step 2: Convert to fraction form
    619,978.57/929,101.73 = 335,054.86/x
  3. Step 3: Cross multiply
    619,978.57x = 929,101.73 × 335,054.86
  4. Step 4: Simplify right side
    619,978.57x = 311,300,048,395.63
  5. Step 5: Solve for x
    x = 311,300,048,395.63/619,978.57
  6. Step 6: Final answer
    x = 502,114.21

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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.