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Finding the Fourth Proportional to 10,899.53, 15,043.07 and 6,651.51

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Solution

The fourth proportional to 10,899.53, 15,043.07 and 6,651.51 is: 9,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.53 : 15,043.07 = 6,651.51 : x
  2. Step 2: Convert to fraction form
    10,899.53/15,043.07 = 6,651.51/x
  3. Step 3: Cross multiply
    10,899.53x = 15,043.07 × 6,651.51
  4. Step 4: Simplify right side
    10,899.53x = 100,059,130.54
  5. Step 5: Solve for x
    x = 100,059,130.54/10,899.53
  6. Step 6: Final answer
    x = 9,180.13

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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.