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Finding the Fourth Proportional to 587,813.68, 881,970.15 and 321,262.78

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Solution

The fourth proportional to 587,813.68, 881,970.15 and 321,262.78 is: 482,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,813.68 : 881,970.15 = 321,262.78 : x
  2. Step 2: Convert to fraction form
    587,813.68/881,970.15 = 321,262.78/x
  3. Step 3: Cross multiply
    587,813.68x = 881,970.15 × 321,262.78
  4. Step 4: Simplify right side
    587,813.68x = 283,344,182,266.02
  5. Step 5: Solve for x
    x = 283,344,182,266.02/587,813.68
  6. Step 6: Final answer
    x = 482,030.60

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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.