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Finding the Fourth Proportional to 48,938.40, 73,213.20 and 42,436.80

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Solution

The fourth proportional to 48,938.40, 73,213.20 and 42,436.80 is: 63,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,938.40 : 73,213.20 = 42,436.80 : x
  2. Step 2: Convert to fraction form
    48,938.40/73,213.20 = 42,436.80/x
  3. Step 3: Cross multiply
    48,938.40x = 73,213.20 × 42,436.80
  4. Step 4: Simplify right side
    48,938.40x = 3,106,933,925.76
  5. Step 5: Solve for x
    x = 3,106,933,925.76/48,938.40
  6. Step 6: Final answer
    x = 63,486.63

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