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Finding the Fourth Proportional to 269,572.79, 372,009.40 and 148,721.60

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Solution

The fourth proportional to 269,572.79, 372,009.40 and 148,721.60 is: 205,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,572.79 : 372,009.40 = 148,721.60 : x
  2. Step 2: Convert to fraction form
    269,572.79/372,009.40 = 148,721.60/x
  3. Step 3: Cross multiply
    269,572.79x = 372,009.40 × 148,721.60
  4. Step 4: Simplify right side
    269,572.79x = 55,325,833,741.26
  5. Step 5: Solve for x
    x = 55,325,833,741.26/269,572.79
  6. Step 6: Final answer
    x = 205,235.23

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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.