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Finding the Fourth Proportional to 158,235.63, 218,365.47 and 86,620.23

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Solution

The fourth proportional to 158,235.63, 218,365.47 and 86,620.23 is: 119,536.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,235.63 : 218,365.47 = 86,620.23 : x
  2. Step 2: Convert to fraction form
    158,235.63/218,365.47 = 86,620.23/x
  3. Step 3: Cross multiply
    158,235.63x = 218,365.47 × 86,620.23
  4. Step 4: Simplify right side
    158,235.63x = 18,914,867,235.46
  5. Step 5: Solve for x
    x = 18,914,867,235.46/158,235.63
  6. Step 6: Final answer
    x = 119,536.08

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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.