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Finding the Fourth Proportional to 19,898.34, 27,457.43 and 10,945.01

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Solution

The fourth proportional to 19,898.34, 27,457.43 and 10,945.01 is: 15,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,898.34 : 27,457.43 = 10,945.01 : x
  2. Step 2: Convert to fraction form
    19,898.34/27,457.43 = 10,945.01/x
  3. Step 3: Cross multiply
    19,898.34x = 27,457.43 × 10,945.01
  4. Step 4: Simplify right side
    19,898.34x = 300,521,653.91
  5. Step 5: Solve for x
    x = 300,521,653.91/19,898.34
  6. Step 6: Final answer
    x = 15,102.85

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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.