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Finding the Fourth Proportional to 70,551.84, 97,361.46 and 38,720.82

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Solution

The fourth proportional to 70,551.84, 97,361.46 and 38,720.82 is: 53,434.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,551.84 : 97,361.46 = 38,720.82 : x
  2. Step 2: Convert to fraction form
    70,551.84/97,361.46 = 38,720.82/x
  3. Step 3: Cross multiply
    70,551.84x = 97,361.46 × 38,720.82
  4. Step 4: Simplify right side
    70,551.84x = 3,769,915,567.60
  5. Step 5: Solve for x
    x = 3,769,915,567.60/70,551.84
  6. Step 6: Final answer
    x = 53,434.69

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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.