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Finding the Fourth Proportional to 76,169.56, 105,101.46 and 47,855.08

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Solution

The fourth proportional to 76,169.56, 105,101.46 and 47,855.08 is: 66,032.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,169.56 : 105,101.46 = 47,855.08 : x
  2. Step 2: Convert to fraction form
    76,169.56/105,101.46 = 47,855.08/x
  3. Step 3: Cross multiply
    76,169.56x = 105,101.46 × 47,855.08
  4. Step 4: Simplify right side
    76,169.56x = 5,029,638,776.42
  5. Step 5: Solve for x
    x = 5,029,638,776.42/76,169.56
  6. Step 6: Final answer
    x = 66,032.14

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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.