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Finding the Fourth Proportional to 114,991.93, 158,688.61 and 64,690.93

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Solution

The fourth proportional to 114,991.93, 158,688.61 and 64,690.93 is: 89,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,991.93 : 158,688.61 = 64,690.93 : x
  2. Step 2: Convert to fraction form
    114,991.93/158,688.61 = 64,690.93/x
  3. Step 3: Cross multiply
    114,991.93x = 158,688.61 × 64,690.93
  4. Step 4: Simplify right side
    114,991.93x = 10,265,713,761.31
  5. Step 5: Solve for x
    x = 10,265,713,761.31/114,991.93
  6. Step 6: Final answer
    x = 89,273.34

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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.