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Finding the Fourth Proportional to 417,674.40, 626,511.60 and 122,186.40

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Solution

The fourth proportional to 417,674.40, 626,511.60 and 122,186.40 is: 183,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,674.40 : 626,511.60 = 122,186.40 : x
  2. Step 2: Convert to fraction form
    417,674.40/626,511.60 = 122,186.40/x
  3. Step 3: Cross multiply
    417,674.40x = 626,511.60 × 122,186.40
  4. Step 4: Simplify right side
    417,674.40x = 76,551,196,962.24
  5. Step 5: Solve for x
    x = 76,551,196,962.24/417,674.40
  6. Step 6: Final answer
    x = 183,279.60

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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.