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Finding the Fourth Proportional to 12,448.87, 18,672.93 and 5,053.15

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Solution

The fourth proportional to 12,448.87, 18,672.93 and 5,053.15 is: 7,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.87 : 18,672.93 = 5,053.15 : x
  2. Step 2: Convert to fraction form
    12,448.87/18,672.93 = 5,053.15/x
  3. Step 3: Cross multiply
    12,448.87x = 18,672.93 × 5,053.15
  4. Step 4: Simplify right side
    12,448.87x = 94,357,116.23
  5. Step 5: Solve for x
    x = 94,357,116.23/12,448.87
  6. Step 6: Final answer
    x = 7,579.57

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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.