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Finding the Fourth Proportional to 84,603.80, 126,848.10 and 32,005.40

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Solution

The fourth proportional to 84,603.80, 126,848.10 and 32,005.40 is: 47,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,603.80 : 126,848.10 = 32,005.40 : x
  2. Step 2: Convert to fraction form
    84,603.80/126,848.10 = 32,005.40/x
  3. Step 3: Cross multiply
    84,603.80x = 126,848.10 × 32,005.40
  4. Step 4: Simplify right side
    84,603.80x = 4,059,824,179.74
  5. Step 5: Solve for x
    x = 4,059,824,179.74/84,603.80
  6. Step 6: Final answer
    x = 47,986.31

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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.