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Finding the Fourth Proportional to 68,091.76, 93,966.62 and 38,283.76

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Solution

The fourth proportional to 68,091.76, 93,966.62 and 38,283.76 is: 52,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,091.76 : 93,966.62 = 38,283.76 : x
  2. Step 2: Convert to fraction form
    68,091.76/93,966.62 = 38,283.76/x
  3. Step 3: Cross multiply
    68,091.76x = 93,966.62 × 38,283.76
  4. Step 4: Simplify right side
    68,091.76x = 3,597,395,528.09
  5. Step 5: Solve for x
    x = 3,597,395,528.09/68,091.76
  6. Step 6: Final answer
    x = 52,831.58

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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.