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Finding the Fourth Proportional to 72,021.92, 99,384 and 46,529.44

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Solution

The fourth proportional to 72,021.92, 99,384 and 46,529.44 is: 64,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.92 : 99,384 = 46,529.44 : x
  2. Step 2: Convert to fraction form
    72,021.92/99,384 = 46,529.44/x
  3. Step 3: Cross multiply
    72,021.92x = 99,384 × 46,529.44
  4. Step 4: Simplify right side
    72,021.92x = 4,624,281,864.96
  5. Step 5: Solve for x
    x = 4,624,281,864.96/72,021.92
  6. Step 6: Final answer
    x = 64,206.59

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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.