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Finding the Fourth Proportional to 51,752.55, 77,628.83 and 45,191.55

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Solution

The fourth proportional to 51,752.55, 77,628.83 and 45,191.55 is: 67,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,752.55 : 77,628.83 = 45,191.55 : x
  2. Step 2: Convert to fraction form
    51,752.55/77,628.83 = 45,191.55/x
  3. Step 3: Cross multiply
    51,752.55x = 77,628.83 × 45,191.55
  4. Step 4: Simplify right side
    51,752.55x = 3,508,166,926.43
  5. Step 5: Solve for x
    x = 3,508,166,926.43/51,752.55
  6. Step 6: Final answer
    x = 67,787.33

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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.