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Finding the Fourth Proportional to 516,455.98, 774,684.58 and 161,471.86

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Solution

The fourth proportional to 516,455.98, 774,684.58 and 161,471.86 is: 242,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,455.98 : 774,684.58 = 161,471.86 : x
  2. Step 2: Convert to fraction form
    516,455.98/774,684.58 = 161,471.86/x
  3. Step 3: Cross multiply
    516,455.98x = 774,684.58 × 161,471.86
  4. Step 4: Simplify right side
    516,455.98x = 125,089,760,045.92
  5. Step 5: Solve for x
    x = 125,089,760,045.92/516,455.98
  6. Step 6: Final answer
    x = 242,207.98

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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.