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Finding the Fourth Proportional to 92,915.30, 139,193.84 and 55,505.32

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Solution

The fourth proportional to 92,915.30, 139,193.84 and 55,505.32 is: 83,150.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,915.30 : 139,193.84 = 55,505.32 : x
  2. Step 2: Convert to fraction form
    92,915.30/139,193.84 = 55,505.32/x
  3. Step 3: Cross multiply
    92,915.30x = 139,193.84 × 55,505.32
  4. Step 4: Simplify right side
    92,915.30x = 7,725,998,422.01
  5. Step 5: Solve for x
    x = 7,725,998,422.01/92,915.30
  6. Step 6: Final answer
    x = 83,150.98

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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.