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Finding the Fourth Proportional to 132,842.53, 183,323.55 and 79,129.81

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Solution

The fourth proportional to 132,842.53, 183,323.55 and 79,129.81 is: 109,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,842.53 : 183,323.55 = 79,129.81 : x
  2. Step 2: Convert to fraction form
    132,842.53/183,323.55 = 79,129.81/x
  3. Step 3: Cross multiply
    132,842.53x = 183,323.55 × 79,129.81
  4. Step 4: Simplify right side
    132,842.53x = 14,506,357,680.03
  5. Step 5: Solve for x
    x = 14,506,357,680.03/132,842.53
  6. Step 6: Final answer
    x = 109,199.65

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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.