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Finding the Fourth Proportional to 60,840.34, 91,283.88 and 42,845.84

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Solution

The fourth proportional to 60,840.34, 91,283.88 and 42,845.84 is: 64,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,840.34 : 91,283.88 = 42,845.84 : x
  2. Step 2: Convert to fraction form
    60,840.34/91,283.88 = 42,845.84/x
  3. Step 3: Cross multiply
    60,840.34x = 91,283.88 × 42,845.84
  4. Step 4: Simplify right side
    60,840.34x = 3,911,133,846.41
  5. Step 5: Solve for x
    x = 3,911,133,846.41/60,840.34
  6. Step 6: Final answer
    x = 64,285.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.