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Finding the Fourth Proportional to 8,775.04, 12,112.32 and 8,483.20

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Solution

The fourth proportional to 8,775.04, 12,112.32 and 8,483.20 is: 11,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.04 : 12,112.32 = 8,483.20 : x
  2. Step 2: Convert to fraction form
    8,775.04/12,112.32 = 8,483.20/x
  3. Step 3: Cross multiply
    8,775.04x = 12,112.32 × 8,483.20
  4. Step 4: Simplify right side
    8,775.04x = 102,751,233.02
  5. Step 5: Solve for x
    x = 102,751,233.02/8,775.04
  6. Step 6: Final answer
    x = 11,709.49

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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.