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Finding the Fourth Proportional to 201,632.80, 302,558.55 and 83,316.10

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Solution

The fourth proportional to 201,632.80, 302,558.55 and 83,316.10 is: 125,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,632.80 : 302,558.55 = 83,316.10 : x
  2. Step 2: Convert to fraction form
    201,632.80/302,558.55 = 83,316.10/x
  3. Step 3: Cross multiply
    201,632.80x = 302,558.55 × 83,316.10
  4. Step 4: Simplify right side
    201,632.80x = 25,207,998,407.66
  5. Step 5: Solve for x
    x = 25,207,998,407.66/201,632.80
  6. Step 6: Final answer
    x = 125,019.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.