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Finding the Fourth Proportional to 70,018.70, 96,611.28 and 40,941.45

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Solution

The fourth proportional to 70,018.70, 96,611.28 and 40,941.45 is: 56,490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.70 : 96,611.28 = 40,941.45 : x
  2. Step 2: Convert to fraction form
    70,018.70/96,611.28 = 40,941.45/x
  3. Step 3: Cross multiply
    70,018.70x = 96,611.28 × 40,941.45
  4. Step 4: Simplify right side
    70,018.70x = 3,955,405,889.56
  5. Step 5: Solve for x
    x = 3,955,405,889.56/70,018.70
  6. Step 6: Final answer
    x = 56,490.71

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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.