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Finding the Fourth Proportional to 587,860.11, 811,419.42 and 383,941.95

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Solution

The fourth proportional to 587,860.11, 811,419.42 and 383,941.95 is: 529,952.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,860.11 : 811,419.42 = 383,941.95 : x
  2. Step 2: Convert to fraction form
    587,860.11/811,419.42 = 383,941.95/x
  3. Step 3: Cross multiply
    587,860.11x = 811,419.42 × 383,941.95
  4. Step 4: Simplify right side
    587,860.11x = 311,537,954,382.67
  5. Step 5: Solve for x
    x = 311,537,954,382.67/587,860.11
  6. Step 6: Final answer
    x = 529,952.53

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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.