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Finding the Fourth Proportional to 411,521.01, 617,269.91 and 112,004.18

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Solution

The fourth proportional to 411,521.01, 617,269.91 and 112,004.18 is: 168,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,521.01 : 617,269.91 = 112,004.18 : x
  2. Step 2: Convert to fraction form
    411,521.01/617,269.91 = 112,004.18/x
  3. Step 3: Cross multiply
    411,521.01x = 617,269.91 × 112,004.18
  4. Step 4: Simplify right side
    411,521.01x = 69,136,809,959.66
  5. Step 5: Solve for x
    x = 69,136,809,959.66/411,521.01
  6. Step 6: Final answer
    x = 168,003.11

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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.