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Finding the Fourth Proportional to 12,357.65, 18,536.94 and 3,592.64

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Solution

The fourth proportional to 12,357.65, 18,536.94 and 3,592.64 is: 5,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.65 : 18,536.94 = 3,592.64 : x
  2. Step 2: Convert to fraction form
    12,357.65/18,536.94 = 3,592.64/x
  3. Step 3: Cross multiply
    12,357.65x = 18,536.94 × 3,592.64
  4. Step 4: Simplify right side
    12,357.65x = 66,596,552.12
  5. Step 5: Solve for x
    x = 66,596,552.12/12,357.65
  6. Step 6: Final answer
    x = 5,389.10

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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.