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Finding the Fourth Proportional to 13,524.65, 18,663.64 and 7,392.10

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Solution

The fourth proportional to 13,524.65, 18,663.64 and 7,392.10 is: 10,200.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.65 : 18,663.64 = 7,392.10 : x
  2. Step 2: Convert to fraction form
    13,524.65/18,663.64 = 7,392.10/x
  3. Step 3: Cross multiply
    13,524.65x = 18,663.64 × 7,392.10
  4. Step 4: Simplify right side
    13,524.65x = 137,963,428.10
  5. Step 5: Solve for x
    x = 137,963,428.10/13,524.65
  6. Step 6: Final answer
    x = 10,200.89

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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.