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Finding the Fourth Proportional to 516,596.80, 775,004.55 and 156,738.10

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Solution

The fourth proportional to 516,596.80, 775,004.55 and 156,738.10 is: 235,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,596.80 : 775,004.55 = 156,738.10 : x
  2. Step 2: Convert to fraction form
    516,596.80/775,004.55 = 156,738.10/x
  3. Step 3: Cross multiply
    516,596.80x = 775,004.55 × 156,738.10
  4. Step 4: Simplify right side
    516,596.80x = 121,472,740,658.36
  5. Step 5: Solve for x
    x = 121,472,740,658.36/516,596.80
  6. Step 6: Final answer
    x = 235,140.33

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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.