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Finding the Fourth Proportional to 59,978.10, 89,967.26 and 15,604.78

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Solution

The fourth proportional to 59,978.10, 89,967.26 and 15,604.78 is: 23,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,978.10 : 89,967.26 = 15,604.78 : x
  2. Step 2: Convert to fraction form
    59,978.10/89,967.26 = 15,604.78/x
  3. Step 3: Cross multiply
    59,978.10x = 89,967.26 × 15,604.78
  4. Step 4: Simplify right side
    59,978.10x = 1,403,919,113.60
  5. Step 5: Solve for x
    x = 1,403,919,113.60/59,978.10
  6. Step 6: Final answer
    x = 23,407.20

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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.