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Finding the Fourth Proportional to 484,510.40, 726,074.40 and 357,156.80

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Solution

The fourth proportional to 484,510.40, 726,074.40 and 357,156.80 is: 535,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,510.40 : 726,074.40 = 357,156.80 : x
  2. Step 2: Convert to fraction form
    484,510.40/726,074.40 = 357,156.80/x
  3. Step 3: Cross multiply
    484,510.40x = 726,074.40 × 357,156.80
  4. Step 4: Simplify right side
    484,510.40x = 259,322,409,265.92
  5. Step 5: Solve for x
    x = 259,322,409,265.92/484,510.40
  6. Step 6: Final answer
    x = 535,225.68

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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.