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Finding the Fourth Proportional to 88,831.50, 122,575.68 and 57,043.50

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Solution

The fourth proportional to 88,831.50, 122,575.68 and 57,043.50 is: 78,712.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,831.50 : 122,575.68 = 57,043.50 : x
  2. Step 2: Convert to fraction form
    88,831.50/122,575.68 = 57,043.50/x
  3. Step 3: Cross multiply
    88,831.50x = 122,575.68 × 57,043.50
  4. Step 4: Simplify right side
    88,831.50x = 6,992,145,802.08
  5. Step 5: Solve for x
    x = 6,992,145,802.08/88,831.50
  6. Step 6: Final answer
    x = 78,712.46

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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.