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Finding the Fourth Proportional to 158,147.22, 218,241.22 and 86,526.21

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Solution

The fourth proportional to 158,147.22, 218,241.22 and 86,526.21 is: 119,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,147.22 : 218,241.22 = 86,526.21 : x
  2. Step 2: Convert to fraction form
    158,147.22/218,241.22 = 86,526.21/x
  3. Step 3: Cross multiply
    158,147.22x = 218,241.22 × 86,526.21
  4. Step 4: Simplify right side
    158,147.22x = 18,883,585,632.38
  5. Step 5: Solve for x
    x = 18,883,585,632.38/158,147.22
  6. Step 6: Final answer
    x = 119,405.11

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Half scale
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Double scale
Find fourth proportional to 158,148.22, 218,242.60 and 86,527.21
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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.