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Finding the Fourth Proportional to 68,098.50, 93,975.93 and 38,290.50

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Solution

The fourth proportional to 68,098.50, 93,975.93 and 38,290.50 is: 52,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,098.50 : 93,975.93 = 38,290.50 : x
  2. Step 2: Convert to fraction form
    68,098.50/93,975.93 = 38,290.50/x
  3. Step 3: Cross multiply
    68,098.50x = 93,975.93 × 38,290.50
  4. Step 4: Simplify right side
    68,098.50x = 3,598,385,347.67
  5. Step 5: Solve for x
    x = 3,598,385,347.67/68,098.50
  6. Step 6: Final answer
    x = 52,840.89

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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.