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Finding the Fourth Proportional to 15,041.86, 20,757.95 and 8,328.10

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Solution

The fourth proportional to 15,041.86, 20,757.95 and 8,328.10 is: 11,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,041.86 : 20,757.95 = 8,328.10 : x
  2. Step 2: Convert to fraction form
    15,041.86/20,757.95 = 8,328.10/x
  3. Step 3: Cross multiply
    15,041.86x = 20,757.95 × 8,328.10
  4. Step 4: Simplify right side
    15,041.86x = 172,874,283.40
  5. Step 5: Solve for x
    x = 172,874,283.40/15,041.86
  6. Step 6: Final answer
    x = 11,492.88

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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.