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Finding the Fourth Proportional to 73,066.38, 100,831.60 and 39,532.38

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Solution

The fourth proportional to 73,066.38, 100,831.60 and 39,532.38 is: 54,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,066.38 : 100,831.60 = 39,532.38 : x
  2. Step 2: Convert to fraction form
    73,066.38/100,831.60 = 39,532.38/x
  3. Step 3: Cross multiply
    73,066.38x = 100,831.60 × 39,532.38
  4. Step 4: Simplify right side
    73,066.38x = 3,986,113,127.21
  5. Step 5: Solve for x
    x = 3,986,113,127.21/73,066.38
  6. Step 6: Final answer
    x = 54,554.68

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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.