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Finding the Fourth Proportional to 36,951.20, 55,421.40 and 10,653.20

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Solution

The fourth proportional to 36,951.20, 55,421.40 and 10,653.20 is: 15,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,951.20 : 55,421.40 = 10,653.20 : x
  2. Step 2: Convert to fraction form
    36,951.20/55,421.40 = 10,653.20/x
  3. Step 3: Cross multiply
    36,951.20x = 55,421.40 × 10,653.20
  4. Step 4: Simplify right side
    36,951.20x = 590,415,258.48
  5. Step 5: Solve for x
    x = 590,415,258.48/36,951.20
  6. Step 6: Final answer
    x = 15,978.24

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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.