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Finding the Fourth Proportional to 404,720.80, 607,154.10 and 168,087.40

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Solution

The fourth proportional to 404,720.80, 607,154.10 and 168,087.40 is: 252,161.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,720.80 : 607,154.10 = 168,087.40 : x
  2. Step 2: Convert to fraction form
    404,720.80/607,154.10 = 168,087.40/x
  3. Step 3: Cross multiply
    404,720.80x = 607,154.10 × 168,087.40
  4. Step 4: Simplify right side
    404,720.80x = 102,054,954,068.34
  5. Step 5: Solve for x
    x = 102,054,954,068.34/404,720.80
  6. Step 6: Final answer
    x = 252,161.38

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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.