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Finding the Fourth Proportional to 519,369.86, 779,171.52 and 164,405.18

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Solution

The fourth proportional to 519,369.86, 779,171.52 and 164,405.18 is: 246,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,369.86 : 779,171.52 = 164,405.18 : x
  2. Step 2: Convert to fraction form
    519,369.86/779,171.52 = 164,405.18/x
  3. Step 3: Cross multiply
    519,369.86x = 779,171.52 × 164,405.18
  4. Step 4: Simplify right side
    519,369.86x = 128,099,833,996.47
  5. Step 5: Solve for x
    x = 128,099,833,996.47/519,369.86
  6. Step 6: Final answer
    x = 246,644.72

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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.