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Finding the Fourth Proportional to 18,312.88, 25,258.88 and 17,703.24

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Solution

The fourth proportional to 18,312.88, 25,258.88 and 17,703.24 is: 24,418.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.88 : 25,258.88 = 17,703.24 : x
  2. Step 2: Convert to fraction form
    18,312.88/25,258.88 = 17,703.24/x
  3. Step 3: Cross multiply
    18,312.88x = 25,258.88 × 17,703.24
  4. Step 4: Simplify right side
    18,312.88x = 447,164,014.77
  5. Step 5: Solve for x
    x = 447,164,014.77/18,312.88
  6. Step 6: Final answer
    x = 24,418.01

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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.