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Finding the Fourth Proportional to 68,411.40, 94,420.01 and 40,817.84

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Solution

The fourth proportional to 68,411.40, 94,420.01 and 40,817.84 is: 56,335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,411.40 : 94,420.01 = 40,817.84 : x
  2. Step 2: Convert to fraction form
    68,411.40/94,420.01 = 40,817.84/x
  3. Step 3: Cross multiply
    68,411.40x = 94,420.01 × 40,817.84
  4. Step 4: Simplify right side
    68,411.40x = 3,854,020,490.92
  5. Step 5: Solve for x
    x = 3,854,020,490.92/68,411.40
  6. Step 6: Final answer
    x = 56,335.94

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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.