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Finding the Fourth Proportional to 417,760.22, 626,664.69 and 118,215.74

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Solution

The fourth proportional to 417,760.22, 626,664.69 and 118,215.74 is: 177,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,760.22 : 626,664.69 = 118,215.74 : x
  2. Step 2: Convert to fraction form
    417,760.22/626,664.69 = 118,215.74/x
  3. Step 3: Cross multiply
    417,760.22x = 626,664.69 × 118,215.74
  4. Step 4: Simplify right side
    417,760.22x = 74,081,630,060.22
  5. Step 5: Solve for x
    x = 74,081,630,060.22/417,760.22
  6. Step 6: Final answer
    x = 177,330.50

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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.