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Finding the Fourth Proportional to 118,365.86, 177,431.92 and 47,245.66

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Solution

The fourth proportional to 118,365.86, 177,431.92 and 47,245.66 is: 70,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,365.86 : 177,431.92 = 47,245.66 : x
  2. Step 2: Convert to fraction form
    118,365.86/177,431.92 = 47,245.66/x
  3. Step 3: Cross multiply
    118,365.86x = 177,431.92 × 47,245.66
  4. Step 4: Simplify right side
    118,365.86x = 8,382,887,603.77
  5. Step 5: Solve for x
    x = 8,382,887,603.77/118,365.86
  6. Step 6: Final answer
    x = 70,821.84

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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.