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Finding the Fourth Proportional to 56,990.50, 78,644.76 and 32,795.20

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Solution

The fourth proportional to 56,990.50, 78,644.76 and 32,795.20 is: 45,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,990.50 : 78,644.76 = 32,795.20 : x
  2. Step 2: Convert to fraction form
    56,990.50/78,644.76 = 32,795.20/x
  3. Step 3: Cross multiply
    56,990.50x = 78,644.76 × 32,795.20
  4. Step 4: Simplify right side
    56,990.50x = 2,579,170,633.15
  5. Step 5: Solve for x
    x = 2,579,170,633.15/56,990.50
  6. Step 6: Final answer
    x = 45,256.15

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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.