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Finding the Fourth Proportional to 137,081.53, 205,482.09 and 52,808.68

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Solution

The fourth proportional to 137,081.53, 205,482.09 and 52,808.68 is: 79,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,081.53 : 205,482.09 = 52,808.68 : x
  2. Step 2: Convert to fraction form
    137,081.53/205,482.09 = 52,808.68/x
  3. Step 3: Cross multiply
    137,081.53x = 205,482.09 × 52,808.68
  4. Step 4: Simplify right side
    137,081.53x = 10,851,237,936.54
  5. Step 5: Solve for x
    x = 10,851,237,936.54/137,081.53
  6. Step 6: Final answer
    x = 79,159.01

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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.