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Finding the Fourth Proportional to 158,333.56, 218,502.78 and 86,712.28

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Solution

The fourth proportional to 158,333.56, 218,502.78 and 86,712.28 is: 119,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,333.56 : 218,502.78 = 86,712.28 : x
  2. Step 2: Convert to fraction form
    158,333.56/218,502.78 = 86,712.28/x
  3. Step 3: Cross multiply
    158,333.56x = 218,502.78 × 86,712.28
  4. Step 4: Simplify right side
    158,333.56x = 18,946,874,240.14
  5. Step 5: Solve for x
    x = 18,946,874,240.14/158,333.56
  6. Step 6: Final answer
    x = 119,664.30

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1.5x scale

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.