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Finding the Fourth Proportional to 159,066.86, 219,516.46 and 87,448.68

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Solution

The fourth proportional to 159,066.86, 219,516.46 and 87,448.68 is: 120,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,066.86 : 219,516.46 = 87,448.68 : x
  2. Step 2: Convert to fraction form
    159,066.86/219,516.46 = 87,448.68/x
  3. Step 3: Cross multiply
    159,066.86x = 219,516.46 × 87,448.68
  4. Step 4: Simplify right side
    159,066.86x = 19,196,424,665.27
  5. Step 5: Solve for x
    x = 19,196,424,665.27/159,066.86
  6. Step 6: Final answer
    x = 120,681.48

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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.