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Finding the Fourth Proportional to 159,412.88, 219,989.79 and 87,792.77

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Solution

The fourth proportional to 159,412.88, 219,989.79 and 87,792.77 is: 121,154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,412.88 : 219,989.79 = 87,792.77 : x
  2. Step 2: Convert to fraction form
    159,412.88/219,989.79 = 87,792.77/x
  3. Step 3: Cross multiply
    159,412.88x = 219,989.79 × 87,792.77
  4. Step 4: Simplify right side
    159,412.88x = 19,313,513,035.82
  5. Step 5: Solve for x
    x = 19,313,513,035.82/159,412.88
  6. Step 6: Final answer
    x = 121,154.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.