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Finding the Fourth Proportional to 10,483.68, 15,728.16 and 3,910.08

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Solution

The fourth proportional to 10,483.68, 15,728.16 and 3,910.08 is: 5,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,483.68 : 15,728.16 = 3,910.08 : x
  2. Step 2: Convert to fraction form
    10,483.68/15,728.16 = 3,910.08/x
  3. Step 3: Cross multiply
    10,483.68x = 15,728.16 × 3,910.08
  4. Step 4: Simplify right side
    10,483.68x = 61,498,363.85
  5. Step 5: Solve for x
    x = 61,498,363.85/10,483.68
  6. Step 6: Final answer
    x = 5,866.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.