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Finding the Fourth Proportional to 158,544.76, 218,791.50 and 86,927.32

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Solution

The fourth proportional to 158,544.76, 218,791.50 and 86,927.32 is: 119,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,544.76 : 218,791.50 = 86,927.32 : x
  2. Step 2: Convert to fraction form
    158,544.76/218,791.50 = 86,927.32/x
  3. Step 3: Cross multiply
    158,544.76x = 218,791.50 × 86,927.32
  4. Step 4: Simplify right side
    158,544.76x = 19,018,958,733.78
  5. Step 5: Solve for x
    x = 19,018,958,733.78/158,544.76
  6. Step 6: Final answer
    x = 119,959.55

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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.