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Finding the Fourth Proportional to 19,898.89, 27,460.90 and 10,946.40

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Solution

The fourth proportional to 19,898.89, 27,460.90 and 10,946.40 is: 15,106.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,898.89 : 27,460.90 = 10,946.40 : x
  2. Step 2: Convert to fraction form
    19,898.89/27,460.90 = 10,946.40/x
  3. Step 3: Cross multiply
    19,898.89x = 27,460.90 × 10,946.40
  4. Step 4: Simplify right side
    19,898.89x = 300,597,803.72
  5. Step 5: Solve for x
    x = 300,597,803.72/19,898.89
  6. Step 6: Final answer
    x = 15,106.26

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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.