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Finding the Fourth Proportional to 55,474.49, 76,554.80 and 29,980.79

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Solution

The fourth proportional to 55,474.49, 76,554.80 and 29,980.79 is: 41,373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,474.49 : 76,554.80 = 29,980.79 : x
  2. Step 2: Convert to fraction form
    55,474.49/76,554.80 = 29,980.79/x
  3. Step 3: Cross multiply
    55,474.49x = 76,554.80 × 29,980.79
  4. Step 4: Simplify right side
    55,474.49x = 2,295,172,849.61
  5. Step 5: Solve for x
    x = 2,295,172,849.61/55,474.49
  6. Step 6: Final answer
    x = 41,373.49

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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.