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Finding the Fourth Proportional to 587,989.90, 881,981.52 and 214,012.90

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Solution

The fourth proportional to 587,989.90, 881,981.52 and 214,012.90 is: 321,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,989.90 : 881,981.52 = 214,012.90 : x
  2. Step 2: Convert to fraction form
    587,989.90/881,981.52 = 214,012.90/x
  3. Step 3: Cross multiply
    587,989.90x = 881,981.52 × 214,012.90
  4. Step 4: Simplify right side
    587,989.90x = 188,755,422,841.61
  5. Step 5: Solve for x
    x = 188,755,422,841.61/587,989.90
  6. Step 6: Final answer
    x = 321,018.14

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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.