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Finding the Fourth Proportional to 77,673.60, 107,132.76 and 50,772.96

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Solution

The fourth proportional to 77,673.60, 107,132.76 and 50,772.96 is: 70,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,673.60 : 107,132.76 = 50,772.96 : x
  2. Step 2: Convert to fraction form
    77,673.60/107,132.76 = 50,772.96/x
  3. Step 3: Cross multiply
    77,673.60x = 107,132.76 × 50,772.96
  4. Step 4: Simplify right side
    77,673.60x = 5,439,447,338.17
  5. Step 5: Solve for x
    x = 5,439,447,338.17/77,673.60
  6. Step 6: Final answer
    x = 70,029.55

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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.