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Finding the Fourth Proportional to 482,690.99, 724,153.55 and 145,711.51

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Solution

The fourth proportional to 482,690.99, 724,153.55 and 145,711.51 is: 218,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,690.99 : 724,153.55 = 145,711.51 : x
  2. Step 2: Convert to fraction form
    482,690.99/724,153.55 = 145,711.51/x
  3. Step 3: Cross multiply
    482,690.99x = 724,153.55 × 145,711.51
  4. Step 4: Simplify right side
    482,690.99x = 105,517,504,703.42
  5. Step 5: Solve for x
    x = 105,517,504,703.42/482,690.99
  6. Step 6: Final answer
    x = 218,602.60

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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.