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Finding the Fourth Proportional to 456,118.70, 684,323.85 and 156,791.30

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Solution

The fourth proportional to 456,118.70, 684,323.85 and 156,791.30 is: 235,237.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,118.70 : 684,323.85 = 156,791.30 : x
  2. Step 2: Convert to fraction form
    456,118.70/684,323.85 = 156,791.30/x
  3. Step 3: Cross multiply
    456,118.70x = 684,323.85 × 156,791.30
  4. Step 4: Simplify right side
    456,118.70x = 107,296,026,062.51
  5. Step 5: Solve for x
    x = 107,296,026,062.51/456,118.70
  6. Step 6: Final answer
    x = 235,237.07

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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.