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Finding the Fourth Proportional to 70,534.67, 97,339.73 and 39,905.33

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Solution

The fourth proportional to 70,534.67, 97,339.73 and 39,905.33 is: 55,070.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,534.67 : 97,339.73 = 39,905.33 : x
  2. Step 2: Convert to fraction form
    70,534.67/97,339.73 = 39,905.33/x
  3. Step 3: Cross multiply
    70,534.67x = 97,339.73 × 39,905.33
  4. Step 4: Simplify right side
    70,534.67x = 3,884,373,361.54
  5. Step 5: Solve for x
    x = 3,884,373,361.54/70,534.67
  6. Step 6: Final answer
    x = 55,070.42

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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.