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Finding the Fourth Proportional to 68,624.65, 94,702.49 and 38,412.77

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Solution

The fourth proportional to 68,624.65, 94,702.49 and 38,412.77 is: 53,009.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,624.65 : 94,702.49 = 38,412.77 : x
  2. Step 2: Convert to fraction form
    68,624.65/94,702.49 = 38,412.77/x
  3. Step 3: Cross multiply
    68,624.65x = 94,702.49 × 38,412.77
  4. Step 4: Simplify right side
    68,624.65x = 3,637,784,301.22
  5. Step 5: Solve for x
    x = 3,637,784,301.22/68,624.65
  6. Step 6: Final answer
    x = 53,009.88

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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.