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Finding the Fourth Proportional to 52,997.45, 79,323.12 and 38,953.78

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Solution

The fourth proportional to 52,997.45, 79,323.12 and 38,953.78 is: 58,303.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,997.45 : 79,323.12 = 38,953.78 : x
  2. Step 2: Convert to fraction form
    52,997.45/79,323.12 = 38,953.78/x
  3. Step 3: Cross multiply
    52,997.45x = 79,323.12 × 38,953.78
  4. Step 4: Simplify right side
    52,997.45x = 3,089,935,167.09
  5. Step 5: Solve for x
    x = 3,089,935,167.09/52,997.45
  6. Step 6: Final answer
    x = 58,303.47

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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.