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Finding the Fourth Proportional to 576,686.19, 795,849.45 and 318,576.45

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Solution

The fourth proportional to 576,686.19, 795,849.45 and 318,576.45 is: 439,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,686.19 : 795,849.45 = 318,576.45 : x
  2. Step 2: Convert to fraction form
    576,686.19/795,849.45 = 318,576.45/x
  3. Step 3: Cross multiply
    576,686.19x = 795,849.45 × 318,576.45
  4. Step 4: Simplify right side
    576,686.19x = 253,538,892,515.45
  5. Step 5: Solve for x
    x = 253,538,892,515.45/576,686.19
  6. Step 6: Final answer
    x = 439,647.93

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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.