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Finding the Fourth Proportional to 86,043.38, 129,051.72 and 43,954.56

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Solution

The fourth proportional to 86,043.38, 129,051.72 and 43,954.56 is: 65,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,043.38 : 129,051.72 = 43,954.56 : x
  2. Step 2: Convert to fraction form
    86,043.38/129,051.72 = 43,954.56/x
  3. Step 3: Cross multiply
    86,043.38x = 129,051.72 × 43,954.56
  4. Step 4: Simplify right side
    86,043.38x = 5,672,411,569.84
  5. Step 5: Solve for x
    x = 5,672,411,569.84/86,043.38
  6. Step 6: Final answer
    x = 65,925.02

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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.