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Finding the Fourth Proportional to 118,400.40, 177,600.12 and 56,114.64

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Solution

The fourth proportional to 118,400.40, 177,600.12 and 56,114.64 is: 84,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,400.40 : 177,600.12 = 56,114.64 : x
  2. Step 2: Convert to fraction form
    118,400.40/177,600.12 = 56,114.64/x
  3. Step 3: Cross multiply
    118,400.40x = 177,600.12 × 56,114.64
  4. Step 4: Simplify right side
    118,400.40x = 9,965,966,797.76
  5. Step 5: Solve for x
    x = 9,965,966,797.76/118,400.40
  6. Step 6: Final answer
    x = 84,171.73

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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.