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Finding the Fourth Proportional to 455,603.90, 683,396.63 and 118,637.09

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Solution

The fourth proportional to 455,603.90, 683,396.63 and 118,637.09 is: 177,953.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,603.90 : 683,396.63 = 118,637.09 : x
  2. Step 2: Convert to fraction form
    455,603.90/683,396.63 = 118,637.09/x
  3. Step 3: Cross multiply
    455,603.90x = 683,396.63 × 118,637.09
  4. Step 4: Simplify right side
    455,603.90x = 81,076,187,499.01
  5. Step 5: Solve for x
    x = 81,076,187,499.01/455,603.90
  6. Step 6: Final answer
    x = 177,953.23

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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.