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Finding the Fourth Proportional to 70,770.34, 97,665.40 and 40,561.46

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Solution

The fourth proportional to 70,770.34, 97,665.40 and 40,561.46 is: 55,976.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,770.34 : 97,665.40 = 40,561.46 : x
  2. Step 2: Convert to fraction form
    70,770.34/97,665.40 = 40,561.46/x
  3. Step 3: Cross multiply
    70,770.34x = 97,665.40 × 40,561.46
  4. Step 4: Simplify right side
    70,770.34x = 3,961,451,215.48
  5. Step 5: Solve for x
    x = 3,961,451,215.48/70,770.34
  6. Step 6: Final answer
    x = 55,976.15

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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.