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Finding the Fourth Proportional to 236,544.58, 354,685.60 and 78,686.92

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Solution

The fourth proportional to 236,544.58, 354,685.60 and 78,686.92 is: 117,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,544.58 : 354,685.60 = 78,686.92 : x
  2. Step 2: Convert to fraction form
    236,544.58/354,685.60 = 78,686.92/x
  3. Step 3: Cross multiply
    236,544.58x = 354,685.60 × 78,686.92
  4. Step 4: Simplify right side
    236,544.58x = 27,909,117,432.35
  5. Step 5: Solve for x
    x = 27,909,117,432.35/236,544.58
  6. Step 6: Final answer
    x = 117,986.71

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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.