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Finding the Fourth Proportional to 18,461.95, 25,474.08 and 10,503.70

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Solution

The fourth proportional to 18,461.95, 25,474.08 and 10,503.70 is: 14,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.95 : 25,474.08 = 10,503.70 : x
  2. Step 2: Convert to fraction form
    18,461.95/25,474.08 = 10,503.70/x
  3. Step 3: Cross multiply
    18,461.95x = 25,474.08 × 10,503.70
  4. Step 4: Simplify right side
    18,461.95x = 267,572,094.10
  5. Step 5: Solve for x
    x = 267,572,094.10/18,461.95
  6. Step 6: Final answer
    x = 14,493.17

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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.