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Finding the Fourth Proportional to 49,751.66, 68,653.50 and 28,238.88

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Solution

The fourth proportional to 49,751.66, 68,653.50 and 28,238.88 is: 38,967.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,751.66 : 68,653.50 = 28,238.88 : x
  2. Step 2: Convert to fraction form
    49,751.66/68,653.50 = 28,238.88/x
  3. Step 3: Cross multiply
    49,751.66x = 68,653.50 × 28,238.88
  4. Step 4: Simplify right side
    49,751.66x = 1,938,697,948.08
  5. Step 5: Solve for x
    x = 1,938,697,948.08/49,751.66
  6. Step 6: Final answer
    x = 38,967.50

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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.