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Finding the Fourth Proportional to 16,805,891.20, 25,208,836.80 and 16,646,458.90

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Solution

The fourth proportional to 16,805,891.20, 25,208,836.80 and 16,646,458.90 is: 24,969,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805,891.20 : 25,208,836.80 = 16,646,458.90 : x
  2. Step 2: Convert to fraction form
    16,805,891.20/25,208,836.80 = 16,646,458.90/x
  3. Step 3: Cross multiply
    16,805,891.20x = 25,208,836.80 × 16,646,458.90
  4. Step 4: Simplify right side
    16,805,891.20x = 419,637,865,708,007.56
  5. Step 5: Solve for x
    x = 419,637,865,708,007.56/16,805,891.20
  6. Step 6: Final answer
    x = 24,969,688.35

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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.