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Finding the Fourth Proportional to 70,785.94, 97,684.54 and 38,954.84

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Solution

The fourth proportional to 70,785.94, 97,684.54 and 38,954.84 is: 53,757.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,785.94 : 97,684.54 = 38,954.84 : x
  2. Step 2: Convert to fraction form
    70,785.94/97,684.54 = 38,954.84/x
  3. Step 3: Cross multiply
    70,785.94x = 97,684.54 × 38,954.84
  4. Step 4: Simplify right side
    70,785.94x = 3,805,285,845.67
  5. Step 5: Solve for x
    x = 3,805,285,845.67/70,785.94
  6. Step 6: Final answer
    x = 53,757.65

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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.