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Finding the Fourth Proportional to 49,076.70, 73,505.70 and 42,515.70

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Solution

The fourth proportional to 49,076.70, 73,505.70 and 42,515.70 is: 63,678.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,076.70 : 73,505.70 = 42,515.70 : x
  2. Step 2: Convert to fraction form
    49,076.70/73,505.70 = 42,515.70/x
  3. Step 3: Cross multiply
    49,076.70x = 73,505.70 × 42,515.70
  4. Step 4: Simplify right side
    49,076.70x = 3,125,146,289.49
  5. Step 5: Solve for x
    x = 3,125,146,289.49/49,076.70
  6. Step 6: Final answer
    x = 63,678.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.