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Finding the Fourth Proportional to 417,546.80, 626,317.20 and 102,000.80

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Solution

The fourth proportional to 417,546.80, 626,317.20 and 102,000.80 is: 153,000.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,546.80 : 626,317.20 = 102,000.80 : x
  2. Step 2: Convert to fraction form
    417,546.80/626,317.20 = 102,000.80/x
  3. Step 3: Cross multiply
    417,546.80x = 626,317.20 × 102,000.80
  4. Step 4: Simplify right side
    417,546.80x = 63,884,855,453.76
  5. Step 5: Solve for x
    x = 63,884,855,453.76/417,546.80
  6. Step 6: Final answer
    x = 153,000.47

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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.