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Finding the Fourth Proportional to 89,687.52, 134,530.04 and 30,564.40

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Solution

The fourth proportional to 89,687.52, 134,530.04 and 30,564.40 is: 45,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,687.52 : 134,530.04 = 30,564.40 : x
  2. Step 2: Convert to fraction form
    89,687.52/134,530.04 = 30,564.40/x
  3. Step 3: Cross multiply
    89,687.52x = 134,530.04 × 30,564.40
  4. Step 4: Simplify right side
    89,687.52x = 4,111,829,954.58
  5. Step 5: Solve for x
    x = 4,111,829,954.58/89,687.52
  6. Step 6: Final answer
    x = 45,846.18

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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.