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Finding the Fourth Proportional to 68,038.40, 93,924.88 and 45,415.60

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Solution

The fourth proportional to 68,038.40, 93,924.88 and 45,415.60 is: 62,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,038.40 : 93,924.88 = 45,415.60 : x
  2. Step 2: Convert to fraction form
    68,038.40/93,924.88 = 45,415.60/x
  3. Step 3: Cross multiply
    68,038.40x = 93,924.88 × 45,415.60
  4. Step 4: Simplify right side
    68,038.40x = 4,265,654,780.13
  5. Step 5: Solve for x
    x = 4,265,654,780.13/68,038.40
  6. Step 6: Final answer
    x = 62,694.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.