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Finding the Fourth Proportional to 40,442.48, 60,666.60 and 10,859.60

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Solution

The fourth proportional to 40,442.48, 60,666.60 and 10,859.60 is: 16,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,442.48 : 60,666.60 = 10,859.60 : x
  2. Step 2: Convert to fraction form
    40,442.48/60,666.60 = 10,859.60/x
  3. Step 3: Cross multiply
    40,442.48x = 60,666.60 × 10,859.60
  4. Step 4: Simplify right side
    40,442.48x = 658,815,009.36
  5. Step 5: Solve for x
    x = 658,815,009.36/40,442.48
  6. Step 6: Final answer
    x = 16,290.17

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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.