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Finding the Fourth Proportional to 505,778.10, 698,073.41 and 301,726.89

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Solution

The fourth proportional to 505,778.10, 698,073.41 and 301,726.89 is: 416,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,778.10 : 698,073.41 = 301,726.89 : x
  2. Step 2: Convert to fraction form
    505,778.10/698,073.41 = 301,726.89/x
  3. Step 3: Cross multiply
    505,778.10x = 698,073.41 × 301,726.89
  4. Step 4: Simplify right side
    505,778.10x = 210,627,518,991.00
  5. Step 5: Solve for x
    x = 210,627,518,991.00/505,778.10
  6. Step 6: Final answer
    x = 416,442.54

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1.5x scale

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.