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Finding the Fourth Proportional to 68,734.81, 94,625.70 and 61,648.93

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Solution

The fourth proportional to 68,734.81, 94,625.70 and 61,648.93 is: 84,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,734.81 : 94,625.70 = 61,648.93 : x
  2. Step 2: Convert to fraction form
    68,734.81/94,625.70 = 61,648.93/x
  3. Step 3: Cross multiply
    68,734.81x = 94,625.70 × 61,648.93
  4. Step 4: Simplify right side
    68,734.81x = 5,833,573,155.50
  5. Step 5: Solve for x
    x = 5,833,573,155.50/68,734.81
  6. Step 6: Final answer
    x = 84,870.72

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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.