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Finding the Fourth Proportional to 62,809.94, 86,678.16 and 34,515.56

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Solution

The fourth proportional to 62,809.94, 86,678.16 and 34,515.56 is: 47,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,809.94 : 86,678.16 = 34,515.56 : x
  2. Step 2: Convert to fraction form
    62,809.94/86,678.16 = 34,515.56/x
  3. Step 3: Cross multiply
    62,809.94x = 86,678.16 × 34,515.56
  4. Step 4: Simplify right side
    62,809.94x = 2,991,745,232.17
  5. Step 5: Solve for x
    x = 2,991,745,232.17/62,809.94
  6. Step 6: Final answer
    x = 47,631.72

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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.