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Finding the Fourth Proportional to 60,503.64, 90,748.17 and 21,057.45

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Solution

The fourth proportional to 60,503.64, 90,748.17 and 21,057.45 is: 31,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,503.64 : 90,748.17 = 21,057.45 : x
  2. Step 2: Convert to fraction form
    60,503.64/90,748.17 = 21,057.45/x
  3. Step 3: Cross multiply
    60,503.64x = 90,748.17 × 21,057.45
  4. Step 4: Simplify right side
    60,503.64x = 1,910,925,052.37
  5. Step 5: Solve for x
    x = 1,910,925,052.37/60,503.64
  6. Step 6: Final answer
    x = 31,583.64

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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.