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Finding the Fourth Proportional to 51,054.88, 70,455.36 and 28,698.88

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Solution

The fourth proportional to 51,054.88, 70,455.36 and 28,698.88 is: 39,604.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,054.88 : 70,455.36 = 28,698.88 : x
  2. Step 2: Convert to fraction form
    51,054.88/70,455.36 = 28,698.88/x
  3. Step 3: Cross multiply
    51,054.88x = 70,455.36 × 28,698.88
  4. Step 4: Simplify right side
    51,054.88x = 2,021,989,922.00
  5. Step 5: Solve for x
    x = 2,021,989,922.00/51,054.88
  6. Step 6: Final answer
    x = 39,604.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.