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Finding the Fourth Proportional to 116,531.65, 160,727.65 and 86,318.25

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Solution

The fourth proportional to 116,531.65, 160,727.65 and 86,318.25 is: 119,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,531.65 : 160,727.65 = 86,318.25 : x
  2. Step 2: Convert to fraction form
    116,531.65/160,727.65 = 86,318.25/x
  3. Step 3: Cross multiply
    116,531.65x = 160,727.65 × 86,318.25
  4. Step 4: Simplify right side
    116,531.65x = 13,873,729,474.61
  5. Step 5: Solve for x
    x = 13,873,729,474.61/116,531.65
  6. Step 6: Final answer
    x = 119,055.46

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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.