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Finding the Fourth Proportional to 159,536.73, 220,159.73 and 86,939.46

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Solution

The fourth proportional to 159,536.73, 220,159.73 and 86,939.46 is: 119,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,536.73 : 220,159.73 = 86,939.46 : x
  2. Step 2: Convert to fraction form
    159,536.73/220,159.73 = 86,939.46/x
  3. Step 3: Cross multiply
    159,536.73x = 220,159.73 × 86,939.46
  4. Step 4: Simplify right side
    159,536.73x = 19,140,567,605.25
  5. Step 5: Solve for x
    x = 19,140,567,605.25/159,536.73
  6. Step 6: Final answer
    x = 119,975.93

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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.