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Finding the Fourth Proportional to 318,943.16, 478,603.11 and 116,521.27

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Solution

The fourth proportional to 318,943.16, 478,603.11 and 116,521.27 is: 174,850.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,943.16 : 478,603.11 = 116,521.27 : x
  2. Step 2: Convert to fraction form
    318,943.16/478,603.11 = 116,521.27/x
  3. Step 3: Cross multiply
    318,943.16x = 478,603.11 × 116,521.27
  4. Step 4: Simplify right side
    318,943.16x = 55,767,442,801.40
  5. Step 5: Solve for x
    x = 55,767,442,801.40/318,943.16
  6. Step 6: Final answer
    x = 174,850.73

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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.