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Finding the Fourth Proportional to 70,665.85, 97,519.49 and 38,400.48

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Solution

The fourth proportional to 70,665.85, 97,519.49 and 38,400.48 is: 52,993.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,665.85 : 97,519.49 = 38,400.48 : x
  2. Step 2: Convert to fraction form
    70,665.85/97,519.49 = 38,400.48/x
  3. Step 3: Cross multiply
    70,665.85x = 97,519.49 × 38,400.48
  4. Step 4: Simplify right side
    70,665.85x = 3,744,795,393.36
  5. Step 5: Solve for x
    x = 3,744,795,393.36/70,665.85
  6. Step 6: Final answer
    x = 52,993.00

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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.