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Finding the Fourth Proportional to 355,049.40, 532,574.10 and 168,425.40

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Solution

The fourth proportional to 355,049.40, 532,574.10 and 168,425.40 is: 252,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,049.40 : 532,574.10 = 168,425.40 : x
  2. Step 2: Convert to fraction form
    355,049.40/532,574.10 = 168,425.40/x
  3. Step 3: Cross multiply
    355,049.40x = 532,574.10 × 168,425.40
  4. Step 4: Simplify right side
    355,049.40x = 89,699,005,822.14
  5. Step 5: Solve for x
    x = 89,699,005,822.14/355,049.40
  6. Step 6: Final answer
    x = 252,638.10

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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.