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Finding the Fourth Proportional to 34,807.70, 48,047.07 and 20,660.54

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Solution

The fourth proportional to 34,807.70, 48,047.07 and 20,660.54 is: 28,518.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,807.70 : 48,047.07 = 20,660.54 : x
  2. Step 2: Convert to fraction form
    34,807.70/48,047.07 = 20,660.54/x
  3. Step 3: Cross multiply
    34,807.70x = 48,047.07 × 20,660.54
  4. Step 4: Simplify right side
    34,807.70x = 992,678,171.38
  5. Step 5: Solve for x
    x = 992,678,171.38/34,807.70
  6. Step 6: Final answer
    x = 28,518.93

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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.