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Finding the Fourth Proportional to 18,465.64, 25,482.54 and 10,082.20

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Solution

The fourth proportional to 18,465.64, 25,482.54 and 10,082.20 is: 13,913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.64 : 25,482.54 = 10,082.20 : x
  2. Step 2: Convert to fraction form
    18,465.64/25,482.54 = 10,082.20/x
  3. Step 3: Cross multiply
    18,465.64x = 25,482.54 × 10,082.20
  4. Step 4: Simplify right side
    18,465.64x = 256,920,064.79
  5. Step 5: Solve for x
    x = 256,920,064.79/18,465.64
  6. Step 6: Final answer
    x = 13,913.41

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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.