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Finding the Fourth Proportional to 219,212.90, 328,637.10 and 92,950.10

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Solution

The fourth proportional to 219,212.90, 328,637.10 and 92,950.10 is: 139,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,212.90 : 328,637.10 = 92,950.10 : x
  2. Step 2: Convert to fraction form
    219,212.90/328,637.10 = 92,950.10/x
  3. Step 3: Cross multiply
    219,212.90x = 328,637.10 × 92,950.10
  4. Step 4: Simplify right side
    219,212.90x = 30,546,851,308.71
  5. Step 5: Solve for x
    x = 30,546,851,308.71/219,212.90
  6. Step 6: Final answer
    x = 139,347.87

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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.