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Finding the Fourth Proportional to 114,399.84, 157,859.04 and 66,643.20

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Solution

The fourth proportional to 114,399.84, 157,859.04 and 66,643.20 is: 91,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,399.84 : 157,859.04 = 66,643.20 : x
  2. Step 2: Convert to fraction form
    114,399.84/157,859.04 = 66,643.20/x
  3. Step 3: Cross multiply
    114,399.84x = 157,859.04 × 66,643.20
  4. Step 4: Simplify right side
    114,399.84x = 10,520,231,574.53
  5. Step 5: Solve for x
    x = 10,520,231,574.53/114,399.84
  6. Step 6: Final answer
    x = 91,960.19

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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.