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Finding the Fourth Proportional to 72,329.99, 99,792.32 and 46,855.88

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Solution

The fourth proportional to 72,329.99, 99,792.32 and 46,855.88 is: 64,646.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,329.99 : 99,792.32 = 46,855.88 : x
  2. Step 2: Convert to fraction form
    72,329.99/99,792.32 = 46,855.88/x
  3. Step 3: Cross multiply
    72,329.99x = 99,792.32 × 46,855.88
  4. Step 4: Simplify right side
    72,329.99x = 4,675,856,970.84
  5. Step 5: Solve for x
    x = 4,675,856,970.84/72,329.99
  6. Step 6: Final answer
    x = 64,646.17

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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.