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Finding the Fourth Proportional to 417,642.60, 626,463.90 and 151,402.80

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Solution

The fourth proportional to 417,642.60, 626,463.90 and 151,402.80 is: 227,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,642.60 : 626,463.90 = 151,402.80 : x
  2. Step 2: Convert to fraction form
    417,642.60/626,463.90 = 151,402.80/x
  3. Step 3: Cross multiply
    417,642.60x = 626,463.90 × 151,402.80
  4. Step 4: Simplify right side
    417,642.60x = 94,848,388,558.92
  5. Step 5: Solve for x
    x = 94,848,388,558.92/417,642.60
  6. Step 6: Final answer
    x = 227,104.20

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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.