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Finding the Fourth Proportional to 60,721.02, 90,477.90 and 54,096.30

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Solution

The fourth proportional to 60,721.02, 90,477.90 and 54,096.30 is: 80,606.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.02 : 90,477.90 = 54,096.30 : x
  2. Step 2: Convert to fraction form
    60,721.02/90,477.90 = 54,096.30/x
  3. Step 3: Cross multiply
    60,721.02x = 90,477.90 × 54,096.30
  4. Step 4: Simplify right side
    60,721.02x = 4,894,519,621.77
  5. Step 5: Solve for x
    x = 4,894,519,621.77/60,721.02
  6. Step 6: Final answer
    x = 80,606.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.