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Finding the Fourth Proportional to 323,116.24, 484,639.98 and 86,482.84

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Solution

The fourth proportional to 323,116.24, 484,639.98 and 86,482.84 is: 129,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,116.24 : 484,639.98 = 86,482.84 : x
  2. Step 2: Convert to fraction form
    323,116.24/484,639.98 = 86,482.84/x
  3. Step 3: Cross multiply
    323,116.24x = 484,639.98 × 86,482.84
  4. Step 4: Simplify right side
    323,116.24x = 41,913,041,847.94
  5. Step 5: Solve for x
    x = 41,913,041,847.94/323,116.24
  6. Step 6: Final answer
    x = 129,715.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.