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Finding the Fourth Proportional to 64,512.40, 96,574.20 and 56,736.40

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Solution

The fourth proportional to 64,512.40, 96,574.20 and 56,736.40 is: 84,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,512.40 : 96,574.20 = 56,736.40 : x
  2. Step 2: Convert to fraction form
    64,512.40/96,574.20 = 56,736.40/x
  3. Step 3: Cross multiply
    64,512.40x = 96,574.20 × 56,736.40
  4. Step 4: Simplify right side
    64,512.40x = 5,479,272,440.88
  5. Step 5: Solve for x
    x = 5,479,272,440.88/64,512.40
  6. Step 6: Final answer
    x = 84,933.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.