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Finding the Fourth Proportional to 74,660.64, 103,024.20 and 45,975.72

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Solution

The fourth proportional to 74,660.64, 103,024.20 and 45,975.72 is: 63,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.64 : 103,024.20 = 45,975.72 : x
  2. Step 2: Convert to fraction form
    74,660.64/103,024.20 = 45,975.72/x
  3. Step 3: Cross multiply
    74,660.64x = 103,024.20 × 45,975.72
  4. Step 4: Simplify right side
    74,660.64x = 4,736,611,772.42
  5. Step 5: Solve for x
    x = 4,736,611,772.42/74,660.64
  6. Step 6: Final answer
    x = 63,441.89

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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.