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Finding the Fourth Proportional to 517,072.51, 775,608.99 and 162,114.20

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Solution

The fourth proportional to 517,072.51, 775,608.99 and 162,114.20 is: 243,171.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,072.51 : 775,608.99 = 162,114.20 : x
  2. Step 2: Convert to fraction form
    517,072.51/775,608.99 = 162,114.20/x
  3. Step 3: Cross multiply
    517,072.51x = 775,608.99 × 162,114.20
  4. Step 4: Simplify right side
    517,072.51x = 125,737,230,926.66
  5. Step 5: Solve for x
    x = 125,737,230,926.66/517,072.51
  6. Step 6: Final answer
    x = 243,171.37

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Half scale
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Double scale
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Similar ratio
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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.