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Finding the Fourth Proportional to 535,125.39, 802,686.47 and 135,765.42

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Solution

The fourth proportional to 535,125.39, 802,686.47 and 135,765.42 is: 203,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,125.39 : 802,686.47 = 135,765.42 : x
  2. Step 2: Convert to fraction form
    535,125.39/802,686.47 = 135,765.42/x
  3. Step 3: Cross multiply
    535,125.39x = 802,686.47 × 135,765.42
  4. Step 4: Simplify right side
    535,125.39x = 108,977,065,049.04
  5. Step 5: Solve for x
    x = 108,977,065,049.04/535,125.39
  6. Step 6: Final answer
    x = 203,647.72

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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.