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Finding the Fourth Proportional to 543,543.14, 815,459.30 and 188,556.58

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Solution

The fourth proportional to 543,543.14, 815,459.30 and 188,556.58 is: 282,885.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,543.14 : 815,459.30 = 188,556.58 : x
  2. Step 2: Convert to fraction form
    543,543.14/815,459.30 = 188,556.58/x
  3. Step 3: Cross multiply
    543,543.14x = 815,459.30 × 188,556.58
  4. Step 4: Simplify right side
    543,543.14x = 153,760,216,737.19
  5. Step 5: Solve for x
    x = 153,760,216,737.19/543,543.14
  6. Step 6: Final answer
    x = 282,885.03

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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.