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Finding the Fourth Proportional to 62,809.39, 86,642.35 and 39,797.11

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Solution

The fourth proportional to 62,809.39, 86,642.35 and 39,797.11 is: 54,898.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,809.39 : 86,642.35 = 39,797.11 : x
  2. Step 2: Convert to fraction form
    62,809.39/86,642.35 = 39,797.11/x
  3. Step 3: Cross multiply
    62,809.39x = 86,642.35 × 39,797.11
  4. Step 4: Simplify right side
    62,809.39x = 3,448,115,133.61
  5. Step 5: Solve for x
    x = 3,448,115,133.61/62,809.39
  6. Step 6: Final answer
    x = 54,898.08

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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.