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Finding the Fourth Proportional to 133,209.23, 183,798.45 and 79,483.82

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Solution

The fourth proportional to 133,209.23, 183,798.45 and 79,483.82 is: 109,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,209.23 : 183,798.45 = 79,483.82 : x
  2. Step 2: Convert to fraction form
    133,209.23/183,798.45 = 79,483.82/x
  3. Step 3: Cross multiply
    133,209.23x = 183,798.45 × 79,483.82
  4. Step 4: Simplify right side
    133,209.23x = 14,609,001,997.09
  5. Step 5: Solve for x
    x = 14,609,001,997.09/133,209.23
  6. Step 6: Final answer
    x = 109,669.60

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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.