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Finding the Fourth Proportional to 103,925.46, 143,321.49 and 68,102.46

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Solution

The fourth proportional to 103,925.46, 143,321.49 and 68,102.46 is: 93,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,925.46 : 143,321.49 = 68,102.46 : x
  2. Step 2: Convert to fraction form
    103,925.46/143,321.49 = 68,102.46/x
  3. Step 3: Cross multiply
    103,925.46x = 143,321.49 × 68,102.46
  4. Step 4: Simplify right side
    103,925.46x = 9,760,546,039.87
  5. Step 5: Solve for x
    x = 9,760,546,039.87/103,925.46
  6. Step 6: Final answer
    x = 93,918.72

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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.