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Finding the Fourth Proportional to 52,630.68, 72,621.18 and 31,408.68

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Solution

The fourth proportional to 52,630.68, 72,621.18 and 31,408.68 is: 43,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,630.68 : 72,621.18 = 31,408.68 : x
  2. Step 2: Convert to fraction form
    52,630.68/72,621.18 = 31,408.68/x
  3. Step 3: Cross multiply
    52,630.68x = 72,621.18 × 31,408.68
  4. Step 4: Simplify right side
    52,630.68x = 2,280,935,403.84
  5. Step 5: Solve for x
    x = 2,280,935,403.84/52,630.68
  6. Step 6: Final answer
    x = 43,338.51

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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.