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Finding the Fourth Proportional to 586,605, 809,514.93 and 318,333

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Solution

The fourth proportional to 586,605, 809,514.93 and 318,333 is: 439,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,605 : 809,514.93 = 318,333 : x
  2. Step 2: Convert to fraction form
    586,605/809,514.93 = 318,333/x
  3. Step 3: Cross multiply
    586,605x = 809,514.93 × 318,333
  4. Step 4: Simplify right side
    586,605x = 257,695,316,211.69
  5. Step 5: Solve for x
    x = 257,695,316,211.69/586,605
  6. Step 6: Final answer
    x = 439,299.56

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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.