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Finding the Fourth Proportional to 54,985.80, 82,405.80 and 48,716.40

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Solution

The fourth proportional to 54,985.80, 82,405.80 and 48,716.40 is: 73,010.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,985.80 : 82,405.80 = 48,716.40 : x
  2. Step 2: Convert to fraction form
    54,985.80/82,405.80 = 48,716.40/x
  3. Step 3: Cross multiply
    54,985.80x = 82,405.80 × 48,716.40
  4. Step 4: Simplify right side
    54,985.80x = 4,014,513,915.12
  5. Step 5: Solve for x
    x = 4,014,513,915.12/54,985.80
  6. Step 6: Final answer
    x = 73,010.01

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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.