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Finding the Fourth Proportional to 428,831.94, 591,400.83 and 267,701.94

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Solution

The fourth proportional to 428,831.94, 591,400.83 and 267,701.94 is: 369,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,831.94 : 591,400.83 = 267,701.94 : x
  2. Step 2: Convert to fraction form
    428,831.94/591,400.83 = 267,701.94/x
  3. Step 3: Cross multiply
    428,831.94x = 591,400.83 × 267,701.94
  4. Step 4: Simplify right side
    428,831.94x = 158,319,149,508.61
  5. Step 5: Solve for x
    x = 158,319,149,508.61/428,831.94
  6. Step 6: Final answer
    x = 369,186.93

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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.