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Finding the Fourth Proportional to 67,780.80, 93,538.08 and 37,972.80

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Solution

The fourth proportional to 67,780.80, 93,538.08 and 37,972.80 is: 52,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,780.80 : 93,538.08 = 37,972.80 : x
  2. Step 2: Convert to fraction form
    67,780.80/93,538.08 = 37,972.80/x
  3. Step 3: Cross multiply
    67,780.80x = 93,538.08 × 37,972.80
  4. Step 4: Simplify right side
    67,780.80x = 3,551,902,804.22
  5. Step 5: Solve for x
    x = 3,551,902,804.22/67,780.80
  6. Step 6: Final answer
    x = 52,402.79

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1.5x scale

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.