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Finding the Fourth Proportional to 18,460.40, 25,475.16 and 10,076.90

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Solution

The fourth proportional to 18,460.40, 25,475.16 and 10,076.90 is: 13,906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.40 : 25,475.16 = 10,076.90 : x
  2. Step 2: Convert to fraction form
    18,460.40/25,475.16 = 10,076.90/x
  3. Step 3: Cross multiply
    18,460.40x = 25,475.16 × 10,076.90
  4. Step 4: Simplify right side
    18,460.40x = 256,710,639.80
  5. Step 5: Solve for x
    x = 256,710,639.80/18,460.40
  6. Step 6: Final answer
    x = 13,906.02

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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.