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Finding the Fourth Proportional to 151,472.88, 209,033.44 and 87,848.48

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Solution

The fourth proportional to 151,472.88, 209,033.44 and 87,848.48 is: 121,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,472.88 : 209,033.44 = 87,848.48 : x
  2. Step 2: Convert to fraction form
    151,472.88/209,033.44 = 87,848.48/x
  3. Step 3: Cross multiply
    151,472.88x = 209,033.44 × 87,848.48
  4. Step 4: Simplify right side
    151,472.88x = 18,363,269,973.17
  5. Step 5: Solve for x
    x = 18,363,269,973.17/151,472.88
  6. Step 6: Final answer
    x = 121,231.40

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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.