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Finding the Fourth Proportional to 148,365.81, 204,709.28 and 87,926.04

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Solution

The fourth proportional to 148,365.81, 204,709.28 and 87,926.04 is: 121,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,365.81 : 204,709.28 = 87,926.04 : x
  2. Step 2: Convert to fraction form
    148,365.81/204,709.28 = 87,926.04/x
  3. Step 3: Cross multiply
    148,365.81x = 204,709.28 × 87,926.04
  4. Step 4: Simplify right side
    148,365.81x = 17,999,275,902.02
  5. Step 5: Solve for x
    x = 17,999,275,902.02/148,365.81
  6. Step 6: Final answer
    x = 121,316.87

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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.