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Finding the Fourth Proportional to 70,185.42, 96,858.63 and 38,355.66

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Solution

The fourth proportional to 70,185.42, 96,858.63 and 38,355.66 is: 52,932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,185.42 : 96,858.63 = 38,355.66 : x
  2. Step 2: Convert to fraction form
    70,185.42/96,858.63 = 38,355.66/x
  3. Step 3: Cross multiply
    70,185.42x = 96,858.63 × 38,355.66
  4. Step 4: Simplify right side
    70,185.42x = 3,715,076,680.35
  5. Step 5: Solve for x
    x = 3,715,076,680.35/70,185.42
  6. Step 6: Final answer
    x = 52,932.31

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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.