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Finding the Fourth Proportional to 12,356.53, 18,532.01 and 5,686.63

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Solution

The fourth proportional to 12,356.53, 18,532.01 and 5,686.63 is: 8,528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.53 : 18,532.01 = 5,686.63 : x
  2. Step 2: Convert to fraction form
    12,356.53/18,532.01 = 5,686.63/x
  3. Step 3: Cross multiply
    12,356.53x = 18,532.01 × 5,686.63
  4. Step 4: Simplify right side
    12,356.53x = 105,384,651.91
  5. Step 5: Solve for x
    x = 105,384,651.91/12,356.53
  6. Step 6: Final answer
    x = 8,528.66

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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.