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Finding the Fourth Proportional to 72,060.44, 99,324.43 and 48,178.40

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Solution

The fourth proportional to 72,060.44, 99,324.43 and 48,178.40 is: 66,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,060.44 : 99,324.43 = 48,178.40 : x
  2. Step 2: Convert to fraction form
    72,060.44/99,324.43 = 48,178.40/x
  3. Step 3: Cross multiply
    72,060.44x = 99,324.43 × 48,178.40
  4. Step 4: Simplify right side
    72,060.44x = 4,785,291,501.24
  5. Step 5: Solve for x
    x = 4,785,291,501.24/72,060.44
  6. Step 6: Final answer
    x = 66,406.64

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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.