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Finding the Fourth Proportional to 10,602.60, 15,911.10 and 5,922.60

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Solution

The fourth proportional to 10,602.60, 15,911.10 and 5,922.60 is: 8,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.60 : 15,911.10 = 5,922.60 : x
  2. Step 2: Convert to fraction form
    10,602.60/15,911.10 = 5,922.60/x
  3. Step 3: Cross multiply
    10,602.60x = 15,911.10 × 5,922.60
  4. Step 4: Simplify right side
    10,602.60x = 94,235,080.86
  5. Step 5: Solve for x
    x = 94,235,080.86/10,602.60
  6. Step 6: Final answer
    x = 8,887.92

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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.