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Finding the Fourth Proportional to 617,127.30, 925,509.51 and 262,138.50

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Solution

The fourth proportional to 617,127.30, 925,509.51 and 262,138.50 is: 393,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,127.30 : 925,509.51 = 262,138.50 : x
  2. Step 2: Convert to fraction form
    617,127.30/925,509.51 = 262,138.50/x
  3. Step 3: Cross multiply
    617,127.30x = 925,509.51 × 262,138.50
  4. Step 4: Simplify right side
    617,127.30x = 242,611,674,687.14
  5. Step 5: Solve for x
    x = 242,611,674,687.14/617,127.30
  6. Step 6: Final answer
    x = 393,130.68

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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.