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Finding the Fourth Proportional to 101,641.80, 152,433.54 and 70,673.88

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Solution

The fourth proportional to 101,641.80, 152,433.54 and 70,673.88 is: 105,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,641.80 : 152,433.54 = 70,673.88 : x
  2. Step 2: Convert to fraction form
    101,641.80/152,433.54 = 70,673.88/x
  3. Step 3: Cross multiply
    101,641.80x = 152,433.54 × 70,673.88
  4. Step 4: Simplify right side
    101,641.80x = 10,773,069,713.94
  5. Step 5: Solve for x
    x = 10,773,069,713.94/101,641.80
  6. Step 6: Final answer
    x = 105,990.54

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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.