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Finding the Fourth Proportional to 124,649.25, 171,928.67 and 84,345.27

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Solution

The fourth proportional to 124,649.25, 171,928.67 and 84,345.27 is: 116,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,649.25 : 171,928.67 = 84,345.27 : x
  2. Step 2: Convert to fraction form
    124,649.25/171,928.67 = 84,345.27/x
  3. Step 3: Cross multiply
    124,649.25x = 171,928.67 × 84,345.27
  4. Step 4: Simplify right side
    124,649.25x = 14,501,370,091.89
  5. Step 5: Solve for x
    x = 14,501,370,091.89/124,649.25
  6. Step 6: Final answer
    x = 116,337.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.