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Finding the Fourth Proportional to 84,657.63, 126,875.01 and 47,235.33

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Solution

The fourth proportional to 84,657.63, 126,875.01 and 47,235.33 is: 70,790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,657.63 : 126,875.01 = 47,235.33 : x
  2. Step 2: Convert to fraction form
    84,657.63/126,875.01 = 47,235.33/x
  3. Step 3: Cross multiply
    84,657.63x = 126,875.01 × 47,235.33
  4. Step 4: Simplify right side
    84,657.63x = 5,992,982,966.10
  5. Step 5: Solve for x
    x = 5,992,982,966.10/84,657.63
  6. Step 6: Final answer
    x = 70,790.82

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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.