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Finding the Fourth Proportional to 77,947, 107,577.39 and 43,962.46

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Solution

The fourth proportional to 77,947, 107,577.39 and 43,962.46 is: 60,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,947 : 107,577.39 = 43,962.46 : x
  2. Step 2: Convert to fraction form
    77,947/107,577.39 = 43,962.46/x
  3. Step 3: Cross multiply
    77,947x = 107,577.39 × 43,962.46
  4. Step 4: Simplify right side
    77,947x = 4,729,366,704.78
  5. Step 5: Solve for x
    x = 4,729,366,704.78/77,947
  6. Step 6: Final answer
    x = 60,674.13

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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.