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Finding the Fourth Proportional to 76,524.62, 105,598.85 and 42,530.90

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Solution

The fourth proportional to 76,524.62, 105,598.85 and 42,530.90 is: 58,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,524.62 : 105,598.85 = 42,530.90 : x
  2. Step 2: Convert to fraction form
    76,524.62/105,598.85 = 42,530.90/x
  3. Step 3: Cross multiply
    76,524.62x = 105,598.85 × 42,530.90
  4. Step 4: Simplify right side
    76,524.62x = 4,491,213,388.82
  5. Step 5: Solve for x
    x = 4,491,213,388.82/76,524.62
  6. Step 6: Final answer
    x = 58,689.79

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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.