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Finding the Fourth Proportional to 158,304.33, 218,457.90 and 86,684.45

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Solution

The fourth proportional to 158,304.33, 218,457.90 and 86,684.45 is: 119,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,304.33 : 218,457.90 = 86,684.45 : x
  2. Step 2: Convert to fraction form
    158,304.33/218,457.90 = 86,684.45/x
  3. Step 3: Cross multiply
    158,304.33x = 218,457.90 × 86,684.45
  4. Step 4: Simplify right side
    158,304.33x = 18,936,901,817.37
  5. Step 5: Solve for x
    x = 18,936,901,817.37/158,304.33
  6. Step 6: Final answer
    x = 119,623.40

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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.