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Finding the Fourth Proportional to 61,574.46, 84,942.68 and 38,902.56

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Solution

The fourth proportional to 61,574.46, 84,942.68 and 38,902.56 is: 53,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,574.46 : 84,942.68 = 38,902.56 : x
  2. Step 2: Convert to fraction form
    61,574.46/84,942.68 = 38,902.56/x
  3. Step 3: Cross multiply
    61,574.46x = 84,942.68 × 38,902.56
  4. Step 4: Simplify right side
    61,574.46x = 3,304,487,510.75
  5. Step 5: Solve for x
    x = 3,304,487,510.75/61,574.46
  6. Step 6: Final answer
    x = 53,666.53

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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.