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Finding the Fourth Proportional to 92,470.68, 138,749.87 and 64,051.31

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Solution

The fourth proportional to 92,470.68, 138,749.87 and 64,051.31 is: 96,107.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,470.68 : 138,749.87 = 64,051.31 : x
  2. Step 2: Convert to fraction form
    92,470.68/138,749.87 = 64,051.31/x
  3. Step 3: Cross multiply
    92,470.68x = 138,749.87 × 64,051.31
  4. Step 4: Simplify right side
    92,470.68x = 8,887,111,442.83
  5. Step 5: Solve for x
    x = 8,887,111,442.83/92,470.68
  6. Step 6: Final answer
    x = 96,107.34

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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.