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Finding the Fourth Proportional to 236,321.80, 354,515.10 and 78,533.80

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Solution

The fourth proportional to 236,321.80, 354,515.10 and 78,533.80 is: 117,811.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,321.80 : 354,515.10 = 78,533.80 : x
  2. Step 2: Convert to fraction form
    236,321.80/354,515.10 = 78,533.80/x
  3. Step 3: Cross multiply
    236,321.80x = 354,515.10 × 78,533.80
  4. Step 4: Simplify right side
    236,321.80x = 27,841,417,960.38
  5. Step 5: Solve for x
    x = 27,841,417,960.38/236,321.80
  6. Step 6: Final answer
    x = 117,811.47

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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.