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Finding the Fourth Proportional to 76,600.08, 105,709.05 and 43,066.08

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Solution

The fourth proportional to 76,600.08, 105,709.05 and 43,066.08 is: 59,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.08 : 105,709.05 = 43,066.08 : x
  2. Step 2: Convert to fraction form
    76,600.08/105,709.05 = 43,066.08/x
  3. Step 3: Cross multiply
    76,600.08x = 105,709.05 × 43,066.08
  4. Step 4: Simplify right side
    76,600.08x = 4,552,474,404.02
  5. Step 5: Solve for x
    x = 4,552,474,404.02/76,600.08
  6. Step 6: Final answer
    x = 59,431.72

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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.