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Finding the Fourth Proportional to 158,188.57, 218,300.54 and 86,573.14

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Solution

The fourth proportional to 158,188.57, 218,300.54 and 86,573.14 is: 119,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,188.57 : 218,300.54 = 86,573.14 : x
  2. Step 2: Convert to fraction form
    158,188.57/218,300.54 = 86,573.14/x
  3. Step 3: Cross multiply
    158,188.57x = 218,300.54 × 86,573.14
  4. Step 4: Simplify right side
    158,188.57x = 18,898,962,232.88
  5. Step 5: Solve for x
    x = 18,898,962,232.88/158,188.57
  6. Step 6: Final answer
    x = 119,471.10

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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.