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Finding the Fourth Proportional to 417,995.61, 626,870.31 and 118,502.36

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Solution

The fourth proportional to 417,995.61, 626,870.31 and 118,502.36 is: 177,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,995.61 : 626,870.31 = 118,502.36 : x
  2. Step 2: Convert to fraction form
    417,995.61/626,870.31 = 118,502.36/x
  3. Step 3: Cross multiply
    417,995.61x = 626,870.31 × 118,502.36
  4. Step 4: Simplify right side
    417,995.61x = 74,285,608,014.58
  5. Step 5: Solve for x
    x = 74,285,608,014.58/417,995.61
  6. Step 6: Final answer
    x = 177,718.63

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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.