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Finding the Fourth Proportional to 68,055.80, 93,903.17 and 39,756.02

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Solution

The fourth proportional to 68,055.80, 93,903.17 and 39,756.02 is: 54,855.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,055.80 : 93,903.17 = 39,756.02 : x
  2. Step 2: Convert to fraction form
    68,055.80/93,903.17 = 39,756.02/x
  3. Step 3: Cross multiply
    68,055.80x = 93,903.17 × 39,756.02
  4. Step 4: Simplify right side
    68,055.80x = 3,733,215,636.29
  5. Step 5: Solve for x
    x = 3,733,215,636.29/68,055.80
  6. Step 6: Final answer
    x = 54,855.22

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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.