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Finding the Fourth Proportional to 92,842.65, 127,831.50 and 81,929.52

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Solution

The fourth proportional to 92,842.65, 127,831.50 and 81,929.52 is: 112,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,842.65 : 127,831.50 = 81,929.52 : x
  2. Step 2: Convert to fraction form
    92,842.65/127,831.50 = 81,929.52/x
  3. Step 3: Cross multiply
    92,842.65x = 127,831.50 × 81,929.52
  4. Step 4: Simplify right side
    92,842.65x = 10,473,173,435.88
  5. Step 5: Solve for x
    x = 10,473,173,435.88/92,842.65
  6. Step 6: Final answer
    x = 112,805.63

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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.