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Finding the Fourth Proportional to 70,906.80, 97,846.74 and 39,075.69

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Solution

The fourth proportional to 70,906.80, 97,846.74 and 39,075.69 is: 53,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,906.80 : 97,846.74 = 39,075.69 : x
  2. Step 2: Convert to fraction form
    70,906.80/97,846.74 = 39,075.69/x
  3. Step 3: Cross multiply
    70,906.80x = 97,846.74 × 39,075.69
  4. Step 4: Simplify right side
    70,906.80x = 3,823,428,879.75
  5. Step 5: Solve for x
    x = 3,823,428,879.75/70,906.80
  6. Step 6: Final answer
    x = 53,921.89

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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.