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Finding the Fourth Proportional to 17,520, 24,148.78 and 12,417.22

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Solution

The fourth proportional to 17,520, 24,148.78 and 12,417.22 is: 17,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,520 : 24,148.78 = 12,417.22 : x
  2. Step 2: Convert to fraction form
    17,520/24,148.78 = 12,417.22/x
  3. Step 3: Cross multiply
    17,520x = 24,148.78 × 12,417.22
  4. Step 4: Simplify right side
    17,520x = 299,860,713.99
  5. Step 5: Solve for x
    x = 299,860,713.99/17,520
  6. Step 6: Final answer
    x = 17,115.34

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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.