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Finding the Fourth Proportional to 158,838.66, 239,373.54 and 143,063.46

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Solution

The fourth proportional to 158,838.66, 239,373.54 and 143,063.46 is: 215,599.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,838.66 : 239,373.54 = 143,063.46 : x
  2. Step 2: Convert to fraction form
    158,838.66/239,373.54 = 143,063.46/x
  3. Step 3: Cross multiply
    158,838.66x = 239,373.54 × 143,063.46
  4. Step 4: Simplify right side
    158,838.66x = 34,245,606,864.85
  5. Step 5: Solve for x
    x = 34,245,606,864.85/158,838.66
  6. Step 6: Final answer
    x = 215,599.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.