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Finding the Fourth Proportional to 683,889, 943,741.26 and 393,545.40

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Solution

The fourth proportional to 683,889, 943,741.26 and 393,545.40 is: 543,077.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,889 : 943,741.26 = 393,545.40 : x
  2. Step 2: Convert to fraction form
    683,889/943,741.26 = 393,545.40/x
  3. Step 3: Cross multiply
    683,889x = 943,741.26 × 393,545.40
  4. Step 4: Simplify right side
    683,889x = 371,405,031,663.20
  5. Step 5: Solve for x
    x = 371,405,031,663.20/683,889
  6. Step 6: Final answer
    x = 543,077.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.