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Finding the Fourth Proportional to 76,096.78, 105,055.79 and 45,889.75

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Solution

The fourth proportional to 76,096.78, 105,055.79 and 45,889.75 is: 63,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,096.78 : 105,055.79 = 45,889.75 : x
  2. Step 2: Convert to fraction form
    76,096.78/105,055.79 = 45,889.75/x
  3. Step 3: Cross multiply
    76,096.78x = 105,055.79 × 45,889.75
  4. Step 4: Simplify right side
    76,096.78x = 4,820,983,841.02
  5. Step 5: Solve for x
    x = 4,820,983,841.02/76,096.78
  6. Step 6: Final answer
    x = 63,353.32

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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.