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Finding the Fourth Proportional to 34,366.65, 47,425.78 and 20,935.06

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Solution

The fourth proportional to 34,366.65, 47,425.78 and 20,935.06 is: 28,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,366.65 : 47,425.78 = 20,935.06 : x
  2. Step 2: Convert to fraction form
    34,366.65/47,425.78 = 20,935.06/x
  3. Step 3: Cross multiply
    34,366.65x = 47,425.78 × 20,935.06
  4. Step 4: Simplify right side
    34,366.65x = 992,861,398.57
  5. Step 5: Solve for x
    x = 992,861,398.57/34,366.65
  6. Step 6: Final answer
    x = 28,890.25

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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.