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Finding the Fourth Proportional to 55,671.67, 76,831.74 and 30,526.03

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Solution

The fourth proportional to 55,671.67, 76,831.74 and 30,526.03 is: 42,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,671.67 : 76,831.74 = 30,526.03 : x
  2. Step 2: Convert to fraction form
    55,671.67/76,831.74 = 30,526.03/x
  3. Step 3: Cross multiply
    55,671.67x = 76,831.74 × 30,526.03
  4. Step 4: Simplify right side
    55,671.67x = 2,345,368,000.19
  5. Step 5: Solve for x
    x = 2,345,368,000.19/55,671.67
  6. Step 6: Final answer
    x = 42,128.57

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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.